diff --git a/app/src/apdu_sign.c b/app/src/apdu_sign.c
index 358bd843f..8ff2b22da 100644
--- a/app/src/apdu_sign.c
+++ b/app/src/apdu_sign.c
@@ -36,6 +36,7 @@
 
 #include "apdu.h"
 #include "apdu_sign.h"
+#include "format.h"
 #include "globals.h"
 #include "handle_swap.h"
 #include "keys.h"
@@ -55,6 +56,7 @@ static void send_reject(int error_code);
 static void send_continue(void);
 static void send_cancel(void);
 static void refill(void);
+static void refill_all(void);
 static void stream_cb(tz_ui_cb_type_t cb_type);
 static void handle_first_apdu(command_t *cmd);
 static void handle_first_apdu_clear(command_t *cmd);
@@ -62,6 +64,10 @@ static void init_blind_stream(void);
 static void handle_data_apdu(command_t *cmd);
 static void handle_data_apdu_clear(command_t *cmd);
 static void handle_data_apdu_blind(void);
+#ifdef HAVE_BAGL
+static void init_too_many_screens_stream(void);
+static void init_summary_stream(void);
+#endif
 
 /* Macros */
 
@@ -77,6 +83,9 @@ static void handle_data_apdu_blind(void);
 #define APDU_SIGN_ASSERT_STEP(x) \
     APDU_SIGN_ASSERT(global.keys.apdu.sign.step == (x))
 
+#define NB_MAX_SCREEN_ALLOWED 20
+#define SCREEN_DISPLAYED      global.keys.apdu.sign.u.clear.screen_displayed
+
 #ifdef HAVE_BAGL
 void
 tz_ui_stream_push_accept_reject(void)
@@ -93,6 +102,55 @@ tz_ui_stream_push_accept_reject(void)
                       TZ_UI_LAYOUT_HOME_PB, TZ_UI_ICON_CROSS);
     FUNC_LEAVE();
 }
+
+void
+tz_ui_stream_push_risky_accept_reject(tz_ui_cb_type_t accept_cb_type,
+                                      tz_ui_cb_type_t reject_cb_type)
+{
+    FUNC_ENTER(("void"));
+    tz_ui_stream_push(accept_cb_type, "Accept risk", "", TZ_UI_LAYOUT_HOME_PB,
+                      TZ_UI_ICON_TICK);
+    tz_ui_stream_push(reject_cb_type, "Reject", "", TZ_UI_LAYOUT_HOME_PB,
+                      TZ_UI_ICON_CROSS);
+    FUNC_LEAVE();
+}
+
+void
+tz_ui_stream_push_warning_not_trusted(
+#ifdef TARGET_NANOS
+    void
+#else
+    const char *title_reason, const char *value_reason
+#endif
+)
+{
+    FUNC_ENTER(("void"));
+#ifdef TARGET_NANOS
+    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "The transaction",
+                      "cannot be trusted.", TZ_UI_LAYOUT_HOME_B,
+                      TZ_UI_ICON_NONE);
+#else
+    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "The transaction",
+                      "cannot be trusted.", TZ_UI_LAYOUT_HOME_PB,
+                      TZ_UI_ICON_WARNING);
+    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, title_reason, value_reason,
+                      TZ_UI_LAYOUT_HOME_N, TZ_UI_ICON_NONE);
+    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "It may not be safe",
+                      "to sign this\ntransaction.", TZ_UI_LAYOUT_HOME_N,
+                      TZ_UI_ICON_NONE);
+#endif
+    FUNC_LEAVE();
+}
+
+void
+tz_ui_stream_push_learn_more(void)
+{
+    FUNC_ENTER(("void"));
+    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB,
+                      "Learn More:", "bit.ly/ledger-tez",
+                      TZ_UI_LAYOUT_HOME_BN, TZ_UI_ICON_NONE);
+    FUNC_LEAVE();
+}
 #endif
 
 static void
@@ -133,7 +191,6 @@ send_reject(int error_code)
     TZ_PREAMBLE(("void"));
 
     APDU_SIGN_ASSERT_STEP(SIGN_ST_WAIT_USER_INPUT);
-    APDU_SIGN_ASSERT(global.keys.apdu.sign.received_last_msg);
     TZ_FAIL(error_code);
     TZ_POSTAMBLE;
 }
@@ -164,13 +221,16 @@ refill_blo_im_full(void)
     size_t           wrote = 0;
     TZ_PREAMBLE(("void"));
 
+    // No display for Swap or Summary flow
+    if (
 #ifdef HAVE_SWAP
-    if (G_called_from_swap) {
+        G_called_from_swap ||
+#endif
+        global.step == ST_SUMMARY_SIGN) {
         tz_parser_flush(st, global.line_buf, TZ_UI_STREAM_CONTENTS_SIZE);
         // invoke refill until we consume entire msg.
         TZ_SUCCEED();
     }
-#endif
 
     global.keys.apdu.sign.step = SIGN_ST_WAIT_USER_INPUT;
 #ifdef HAVE_BAGL
@@ -186,6 +246,7 @@ refill_blo_im_full(void)
         if (st->field_info.is_field_complex
             && (global.keys.apdu.sign.u.clear.last_field_index
                 != st->field_info.field_index)) {
+            SCREEN_DISPLAYED++;
             tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "Next field requires",
                               "careful review", TZ_UI_LAYOUT_HOME_B,
                               TZ_UI_ICON_NONE);
@@ -194,9 +255,17 @@ refill_blo_im_full(void)
         }
     }
 
-    wrote = tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, st->field_info.field_name,
-                              global.line_buf, TZ_UI_LAYOUT_BN,
-                              TZ_UI_ICON_NONE);
+    if ((N_settings.blindsign_status == ST_BLINDSIGN_LARGE_TX)
+        && (SCREEN_DISPLAYED >= NB_MAX_SCREEN_ALLOWED)) {
+        init_too_many_screens_stream();
+        TZ_SUCCEED();
+    } else {
+        SCREEN_DISPLAYED++;
+        wrote = tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB,
+                                  st->field_info.field_name, global.line_buf,
+                                  TZ_UI_LAYOUT_BN, TZ_UI_ICON_NONE);
+    }
+
 #elif HAVE_NBGL
     PRINTF("[DEBUG] field=%s complex=%d\n", st->field_info.field_name,
            st->field_info.is_field_complex);
@@ -247,7 +316,13 @@ refill_blo_done(void)
         TZ_CHECK(sign_packet());
         TZ_SUCCEED();
     }
+
 #ifdef HAVE_BAGL
+    if (global.step == ST_SUMMARY_SIGN) {
+        TZ_CHECK(init_summary_stream());
+        TZ_SUCCEED();
+    }
+
     tz_ui_stream_push_accept_reject();
 #endif
     tz_ui_stream_close();
@@ -273,46 +348,19 @@ refill_error(void)
 #ifdef HAVE_BAGL
     tz_ui_stream_init(stream_cb);
 
-    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB,
-                      "The transaction",
-                      "cannot be trusted.",
-#ifdef TARGET_NANOS
-                      TZ_UI_LAYOUT_HOME_B,
-                      TZ_UI_ICON_NONE);
-#else
-                      TZ_UI_LAYOUT_HOME_PB,
-                      TZ_UI_ICON_WARNING);
-    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB,
-                      "This transaction",
-                      "could not be\ndecoded correctly.",
-                      TZ_UI_LAYOUT_HOME_N,
-                      TZ_UI_ICON_NONE);
-    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB,
-                      "It may not be safe",
-                      "to sign this\ntransaction.",
-                      TZ_UI_LAYOUT_HOME_N,
-                      TZ_UI_ICON_NONE);
+    tz_ui_stream_push_warning_not_trusted(
+#ifndef TARGET_NANOS
+            "This transaction", "could not be\ndecoded correctly."
 #endif
+    );
+
     tz_ui_stream_push_all(TZ_UI_STREAM_CB_NOCB,
                           "Parsing error",
                           tz_parser_result_name(st->errno),
                           TZ_UI_LAYOUT_HOME_BN,
                           TZ_UI_ICON_NONE);
-    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB,
-                      "Learn More:",
-                      "bit.ly/ledger-tez",
-                      TZ_UI_LAYOUT_HOME_BN,
-                      TZ_UI_ICON_NONE);
-    tz_ui_stream_push(TZ_UI_STREAM_CB_BLINDSIGN,
-                      "Accept risk",
-                      "",
-                      TZ_UI_LAYOUT_HOME_PB,
-                      TZ_UI_ICON_TICK);
-    tz_ui_stream_push(TZ_UI_STREAM_CB_CANCEL,
-                      "Reject",
-                      "",
-                      TZ_UI_LAYOUT_HOME_PB,
-                      TZ_UI_ICON_CROSS);
+    tz_ui_stream_push_learn_more();
+    tz_ui_stream_push_risky_accept_reject(TZ_UI_STREAM_CB_BLINDSIGN, TZ_UI_STREAM_CB_CANCEL);
 
 #elif HAVE_NBGL
     tz_ui_stream_push_all(TZ_UI_STREAM_CB_CANCEL,
@@ -324,6 +372,11 @@ refill_error(void)
     // clang-format on
 
     tz_ui_stream_close();
+
+#ifdef HAVE_BAGL
+    tz_ui_stream_start();
+#endif
+
     TZ_POSTAMBLE;
 }
 
@@ -348,6 +401,26 @@ refill(void)
     TZ_POSTAMBLE;
 }
 
+/**
+ * @brief Parse until there is nothing left to parse or user input is
+ * required.
+ */
+static void
+refill_all(void)
+{
+    TZ_PREAMBLE(("void"));
+
+    while (global.keys.apdu.sign.u.clear.received_msg) {
+        TZ_CHECK(refill());
+        if ((global.step == ST_SUMMARY_SIGN)
+            && (global.keys.apdu.sign.step == SIGN_ST_WAIT_USER_INPUT)) {
+            break;
+        }
+    }
+
+    TZ_POSTAMBLE;
+}
+
 static void
 send_cancel(void)
 {
@@ -412,19 +485,168 @@ stream_cb(tz_ui_cb_type_t cb_type)
     TZ_POSTAMBLE;
 }
 
+#ifdef HAVE_BAGL
+static void
+push_next_summary_screen(void)
+{
+#define FINAL_HASH       global.keys.apdu.hash.final_hash
+#define SUMMARYSIGN_STEP global.keys.apdu.sign.u.summary.step
+
+    char num_buffer[TZ_DECIMAL_BUFFER_SIZE(TZ_NUM_BUFFER_SIZE / 8)] = {0};
+    char hash_buffer[TZ_BASE58_BUFFER_SIZE(sizeof(FINAL_HASH))]     = {0};
+    tz_operation_state *op
+        = &global.keys.apdu.sign.u.clear.parser_state.operation;
+
+    TZ_PREAMBLE(("void"));
+
+    switch (SUMMARYSIGN_STEP) {
+    case SUMMARYSIGN_ST_OPERATION:
+        SUMMARYSIGN_STEP = SUMMARYSIGN_ST_NB_TX;
+
+        snprintf(num_buffer, sizeof(num_buffer), "%d", op->batch_index);
+        tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "Number of Tx", num_buffer,
+                          TZ_UI_LAYOUT_BN, TZ_UI_ICON_NONE);
+        break;
+    case SUMMARYSIGN_ST_NB_TX:
+        SUMMARYSIGN_STEP = SUMMARYSIGN_ST_AMOUNT;
+
+        tz_mutez_to_string(num_buffer, sizeof(num_buffer), op->total_amount);
+        tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "Total amount", num_buffer,
+                          TZ_UI_LAYOUT_BN, TZ_UI_ICON_NONE);
+        break;
+    case SUMMARYSIGN_ST_AMOUNT:
+        SUMMARYSIGN_STEP = SUMMARYSIGN_ST_FEE;
+
+        tz_mutez_to_string(num_buffer, sizeof(num_buffer), op->total_fee);
+        tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "Total fee", num_buffer,
+                          TZ_UI_LAYOUT_BN, TZ_UI_ICON_NONE);
+        break;
+    case SUMMARYSIGN_ST_FEE:
+        SUMMARYSIGN_STEP = SUMMARYSIGN_ST_HASH;
+
+        if (tz_format_base58(FINAL_HASH, sizeof(FINAL_HASH), hash_buffer,
+                             sizeof(hash_buffer))) {
+            TZ_FAIL(EXC_UNKNOWN);
+        }
+        tz_ui_stream_push_all(TZ_UI_STREAM_CB_NOCB, "Hash", hash_buffer,
+                              TZ_UI_LAYOUT_BN, TZ_UI_ICON_NONE);
+        break;
+    case SUMMARYSIGN_ST_HASH:
+        SUMMARYSIGN_STEP = SUMMARYSIGN_ST_ACCEPT_REJECT;
+
+        tz_ui_stream_push_accept_reject();
+        tz_ui_stream_close();
+        break;
+    default:
+        PRINTF("Unexpected summary state: %d\n", (int)SUMMARYSIGN_STEP);
+        TZ_FAIL(EXC_UNEXPECTED_STATE);
+    };
+
+    TZ_POSTAMBLE;
+
+#undef SUMMARYSIGN_STEP
+#undef FINAL_HASH
+}
+
+static void
+summary_stream_cb(tz_ui_cb_type_t cb_type)
+{
+    TZ_PREAMBLE(("cb_type=%u", cb_type));
+
+    // clang-format off
+    switch (cb_type) {
+    case TZ_UI_STREAM_CB_ACCEPT: TZ_CHECK(sign_packet());              break;
+    case TZ_UI_STREAM_CB_REJECT: send_reject(EXC_REJECT);              break;
+    case TZ_UI_STREAM_CB_REFILL: TZ_CHECK(push_next_summary_screen()); break;
+    default:                     TZ_FAIL(EXC_UNKNOWN);                 break;
+    }
+    // clang-format on
+
+    TZ_POSTAMBLE;
+}
+
+static void
+init_summary_stream(void)
+{
+    TZ_PREAMBLE(("void"));
+
+    tz_ui_stream_init(summary_stream_cb);
+
+    global.keys.apdu.sign.u.summary.step = SUMMARYSIGN_ST_OPERATION;
+    push_next_summary_screen();
+
+    tz_ui_stream();
+
+    TZ_POSTAMBLE;
+}
+
+static void
+pass_from_clear_to_summary(void)
+{
+    TZ_PREAMBLE(("void"));
+
+    APDU_SIGN_ASSERT_STEP(SIGN_ST_WAIT_USER_INPUT);
+
+    global.step                = ST_SUMMARY_SIGN;
+    global.keys.apdu.sign.step = SIGN_ST_WAIT_DATA;
+
+    TZ_CHECK(refill_all());
+
+    TZ_POSTAMBLE;
+}
+
+static void
+too_many_screens_stream_cb(tz_ui_cb_type_t cb_type)
+{
+    TZ_PREAMBLE(("cb_type=%u", cb_type));
+
+    // clang-format off
+    switch (cb_type) {
+    case TZ_UI_STREAM_CB_VALIDATE: TZ_CHECK(pass_from_clear_to_summary()); break;
+    case TZ_UI_STREAM_CB_REJECT:   send_reject(EXC_REJECT);                break;
+    default:                       TZ_FAIL(EXC_UNKNOWN);                   break;
+    }
+    // clang-format on
+
+    TZ_POSTAMBLE;
+}
+
+static void
+init_too_many_screens_stream(void)
+{
+    tz_ui_stream_init(too_many_screens_stream_cb);
+
+    tz_ui_stream_push_warning_not_trusted(
+#ifndef TARGET_NANOS
+        "Operation too long", "Proceed to\nblindsign."
+#endif
+    );
+#ifdef TARGET_NANOS
+    tz_ui_stream_push(TZ_UI_STREAM_CB_NOCB, "Operation too long",
+                      "Accept blindsign.", TZ_UI_LAYOUT_HOME_B,
+                      TZ_UI_ICON_NONE);
+#endif
+    tz_ui_stream_push_risky_accept_reject(TZ_UI_STREAM_CB_VALIDATE,
+                                          TZ_UI_STREAM_CB_REJECT);
+
+    tz_ui_stream_close();
+}
+#endif
+
 #define FINAL_HASH global.keys.apdu.hash.final_hash
 #ifdef HAVE_BAGL
 static void
 bs_push_next(void)
 {
-    char              obuf[TZ_BASE58_BUFFER_SIZE(sizeof(FINAL_HASH))];
-    blindsign_step_t *step = &global.keys.apdu.sign.u.blind.step;
+#define BLINDSIGN_STEP global.keys.apdu.sign.u.blind.step
+
+    char obuf[TZ_BASE58_BUFFER_SIZE(sizeof(FINAL_HASH))];
 
     TZ_PREAMBLE(("void"));
 
-    switch (*step) {
+    switch (BLINDSIGN_STEP) {
     case BLINDSIGN_ST_OPERATION:
-        *step = BLINDSIGN_ST_HASH;
+        BLINDSIGN_STEP = BLINDSIGN_ST_HASH;
 
         if (tz_format_base58(FINAL_HASH, sizeof(FINAL_HASH), obuf,
                              sizeof(obuf))) {
@@ -435,17 +657,19 @@ bs_push_next(void)
                               TZ_UI_LAYOUT_BN, TZ_UI_ICON_NONE);
         break;
     case BLINDSIGN_ST_HASH:
-        *step = BLINDSIGN_ST_ACCEPT_REJECT;
+        BLINDSIGN_STEP = BLINDSIGN_ST_ACCEPT_REJECT;
 
         tz_ui_stream_push_accept_reject();
         tz_ui_stream_close();
         break;
     default:
-        PRINTF("Unexpected blindsign state: %d\n", (int)*step);
+        PRINTF("Unexpected blindsign state: %d\n", (int)BLINDSIGN_STEP);
         TZ_FAIL(EXC_UNEXPECTED_STATE);
     };
 
     TZ_POSTAMBLE;
+
+#undef BLINDSIGN_STEP
 }
 
 static void
@@ -566,13 +790,19 @@ handle_data_apdu(command_t *cmd)
         global.keys.apdu.sign.tag = cmd->data[0];
     }
 
+    if ((N_settings.blindsign_status == ST_BLINDSIGN_ON)
+        && (global.step == ST_CLEAR_SIGN)) {
+        global.step = ST_SUMMARY_SIGN;
+    }
+
     // clang-format off
     switch (global.step) {
     case ST_CLEAR_SIGN:
     case ST_SWAP_SIGN:
-                        TZ_CHECK(handle_data_apdu_clear(cmd)); break;
-    case ST_BLIND_SIGN: TZ_CHECK(handle_data_apdu_blind());    break;
-    default:            TZ_FAIL(EXC_UNEXPECTED_STATE);         break;
+    case ST_SUMMARY_SIGN:
+                          TZ_CHECK(handle_data_apdu_clear(cmd)); break;
+    case ST_BLIND_SIGN:   TZ_CHECK(handle_data_apdu_blind());    break;
+    default:              TZ_FAIL(EXC_UNEXPECTED_STATE);         break;
     }
     // clang-format on
 
@@ -600,17 +830,23 @@ handle_data_apdu_clear(command_t *cmd)
         tz_operation_parser_set_size(
             st, global.keys.apdu.sign.u.clear.total_length);
     }
-    if (global.step == ST_SWAP_SIGN) {
-        do {
-            TZ_CHECK(refill());
-        } while (global.keys.apdu.sign.u.clear.received_msg);
-    } else {
+
+    switch (global.step) {
+    case ST_CLEAR_SIGN:
         TZ_CHECK(refill());
-        if ((global.keys.apdu.sign.step == SIGN_ST_WAIT_USER_INPUT)
-            && (global.step != ST_SWAP_SIGN)) {
+        if (global.keys.apdu.sign.step == SIGN_ST_WAIT_USER_INPUT) {
             tz_ui_stream();
         }
+        break;
+    case ST_SWAP_SIGN:
+    case ST_SUMMARY_SIGN:
+        TZ_CHECK(refill_all());
+        break;
+    default:
+        TZ_FAIL(EXC_UNEXPECTED_SIGN_STATE);
+        break;
     }
+
     TZ_POSTAMBLE;
 }
 
@@ -771,6 +1007,7 @@ handle_apdu_sign(command_t *cmd)
 
     TZ_ASSERT(EXC_UNEXPECTED_STATE, (global.step == ST_BLIND_SIGN)
                                         || (global.step == ST_CLEAR_SIGN)
+                                        || (global.step == ST_SUMMARY_SIGN)
                                         || (global.step == ST_SWAP_SIGN));
     TZ_ASSERT(EXC_INVALID_INS,
               return_hash == global.keys.apdu.sign.return_hash);
diff --git a/app/src/apdu_sign.h b/app/src/apdu_sign.h
index 5e0385726..190272c80 100644
--- a/app/src/apdu_sign.h
+++ b/app/src/apdu_sign.h
@@ -59,6 +59,19 @@ typedef enum {
     BLINDSIGN_ST_ACCEPT_REJECT,
 } blindsign_step_t;
 
+/**
+ * @brief Steps to display summary.
+ *
+ */
+typedef enum {
+    SUMMARYSIGN_ST_OPERATION,
+    SUMMARYSIGN_ST_NB_TX,
+    SUMMARYSIGN_ST_AMOUNT,
+    SUMMARYSIGN_ST_FEE,
+    SUMMARYSIGN_ST_HASH,
+    SUMMARYSIGN_ST_ACCEPT_REJECT,
+} summarysign_step_t;
+
 /**
  * @brief Struct to track state/info about current sign operation.
  *
@@ -77,11 +90,15 @@ typedef struct {
             tz_parser_state parser_state;
             size_t          total_length;
             uint8_t         last_field_index;
+            uint8_t         screen_displayed;
             bool            received_msg;
         } clear;
         /// @brief blindsigning state info.
         struct {
             blindsign_step_t step;
         } blind;
+        struct {
+            summarysign_step_t step;
+        } summary;
     } u;
 } apdu_sign_state_t;
diff --git a/app/src/format.c b/app/src/format.c
new file mode 100644
index 000000000..69bab1090
--- /dev/null
+++ b/app/src/format.c
@@ -0,0 +1,35 @@
+/* Tezos Ledger application - Tezos-specific formatting function set
+
+   Copyright 2024 Functori <contact@functori.com>
+
+   With code excerpts from:
+    - Legacy Tezos app, Copyright 2019 Obsidian Systems
+    - Ledger Blue sample apps, Copyright 2016 Ledger
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License. */
+
+#include <format.h>
+
+#include "format.h"
+
+bool
+tz_mutez_to_string(char *obuf, size_t olen, uint64_t amount)
+{
+    if (!format_fpu64_trimmed(obuf, olen, amount, 6 /*DECIMALS*/)) {
+        memset(obuf, '\0', olen);
+        return false;
+    }
+
+    strlcat(obuf, " XTZ", olen);
+    return true;
+}
diff --git a/app/src/format.h b/app/src/format.h
new file mode 100644
index 000000000..098469064
--- /dev/null
+++ b/app/src/format.h
@@ -0,0 +1,25 @@
+/* Tezos Ledger application - Tezos-specific formatting function set
+
+   Copyright 2024 Functori <contact@functori.com>
+
+   With code excerpts from:
+    - Legacy Tezos app, Copyright 2019 Obsidian Systems
+    - Ledger Blue sample apps, Copyright 2016 Ledger
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License. */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+bool tz_mutez_to_string(char *obuf, size_t olen, uint64_t amount);
diff --git a/app/src/globals.h b/app/src/globals.h
index bd947300d..603493832 100644
--- a/app/src/globals.h
+++ b/app/src/globals.h
@@ -68,12 +68,13 @@ typedef enum {
  *
  */
 typedef enum {
-    ST_IDLE,        /// Idle state
-    ST_CLEAR_SIGN,  /// Clearsigning an operation
-    ST_BLIND_SIGN,  /// blindsigning an operation
-    ST_PROMPT,      /// Waiting for user prompt
-    ST_SWAP_SIGN,   /// Performing swap operations
-    ST_ERROR        /// In error state.
+    ST_IDLE,          /// Idle state
+    ST_CLEAR_SIGN,    /// Clear signing an operation
+    ST_BLIND_SIGN,    /// Blind signing an operation
+    ST_SUMMARY_SIGN,  /// Summary signing an operation
+    ST_PROMPT,        /// Waiting for user prompt
+    ST_SWAP_SIGN,     /// Performing swap operations
+    ST_ERROR          /// In error state.
 } main_step_t;
 
 typedef enum {
diff --git a/app/src/handle_swap.c b/app/src/handle_swap.c
index 9f7a8a48d..daaa9f879 100644
--- a/app/src/handle_swap.c
+++ b/app/src/handle_swap.c
@@ -122,7 +122,7 @@ swap_handle_get_printable_amount(get_printable_amount_parameters_t *params)
 
 typedef struct {
     uint64_t amount;
-    uint64_t fee;
+    uint64_t fee;  /// Contains transaction fees plus reveal fees, if any.
     char     destination_address[ADDRESS_MAX_SIZE];
 } swap_transaction_parameters_t;
 
@@ -204,8 +204,8 @@ swap_check_validity(void)
     TZ_ASSERT(EXC_REJECT, op->nb_reveal <= 1);
     TZ_ASSERT(EXC_REJECT, (op->batch_index - op->nb_reveal) == 1);
     TZ_ASSERT(EXC_REJECT, op->last_tag == TZ_OPERATION_TAG_TRANSACTION);
-    TZ_ASSERT(EXC_REJECT, op->last_amount == G_swap_params.amount);
-    TZ_ASSERT(EXC_REJECT, op->last_fee == G_swap_params.fee);
+    TZ_ASSERT(EXC_REJECT, op->total_amount == G_swap_params.amount);
+    TZ_ASSERT(EXC_REJECT, op->total_fee == G_swap_params.fee);
 
     tz_format_address(op->destination, 22, dstaddr, sizeof(dstaddr));
 
diff --git a/app/src/parser/operation_parser.c b/app/src/parser/operation_parser.c
index 118ec8fb9..9dab46834 100644
--- a/app/src/parser/operation_parser.c
+++ b/app/src/parser/operation_parser.c
@@ -319,11 +319,11 @@ tz_operation_parser_init(tz_parser_state *state, uint16_t size,
     memset(&state->operation.destination, 0, 22);
     op->batch_index = 0;
 #ifdef HAVE_SWAP
-    op->last_tag    = TZ_OPERATION_TAG_END;
-    op->nb_reveal   = 0;
-    op->last_fee    = 0;
-    op->last_amount = 0;
+    op->last_tag  = TZ_OPERATION_TAG_END;
+    op->nb_reveal = 0;
 #endif  // HAVE_SWAP
+    op->total_fee     = 0;
+    op->total_amount  = 0;
     op->frame         = op->stack;
     op->stack[0].stop = size;
     if (!skip_magic) {
@@ -665,22 +665,20 @@ tz_step_read_num(tz_parser_state *state)
                               &op->frame->step_read_num.state, b,
                               op->frame->step_read_num.natural));
     if (op->frame->step_read_num.state.stop) {
-#ifdef HAVE_SWAP
         uint64_t value;
         if (!tz_string_to_mutez(state->buffers.num.decimal, &value)) {
             tz_raise(INVALID_DATA);
         }
         switch (op->frame->step_read_num.kind) {
         case TZ_OPERATION_FIELD_AMOUNT:
-            op->last_amount = value;
+            op->total_amount += value;
             break;
         case TZ_OPERATION_FIELD_FEE:
-            op->last_fee = value;
+            op->total_fee += value;
             break;
         default:
             break;
         }
-#endif  // HAVE_SWAP
         if (op->frame->step_read_num.skip) {
             tz_must(pop_frame(state));
             tz_continue;
diff --git a/app/src/parser/operation_state.h b/app/src/parser/operation_state.h
index f741f1bb9..cd2a1e81c 100644
--- a/app/src/parser/operation_state.h
+++ b/app/src/parser/operation_state.h
@@ -243,9 +243,9 @@ typedef struct {
     uint8_t  destination[22];             /// saved for entrypoint dispatch
     uint16_t batch_index;                 /// to print a sequence number
 #ifdef HAVE_SWAP
-    tz_operation_tag last_tag;     /// last operations tag encountered
-    uint16_t         nb_reveal;    /// number of reveal encountered
-    uint64_t         last_fee;     /// last fee encountered
-    uint64_t         last_amount;  /// last amount encountered
-#endif                             // HAVE_SWAP
+    tz_operation_tag last_tag;   /// last operations tag encountered
+    uint16_t         nb_reveal;  /// number of reveal encountered
+#endif                           // HAVE_SWAP
+    uint64_t total_fee;          /// last fee encountered
+    uint64_t total_amount;       /// last amount encountered
 } tz_operation_state;
diff --git a/app/src/ui_stream.h b/app/src/ui_stream.h
index 581389841..73b893cc5 100644
--- a/app/src/ui_stream.h
+++ b/app/src/ui_stream.h
@@ -82,6 +82,7 @@
 typedef uint8_t tz_ui_cb_type_t;
 #define TZ_UI_STREAM_CB_NOCB               0x00u
 #define TZ_UI_STREAM_CB_BLINDSIGN          0x0Eu
+#define TZ_UI_STREAM_CB_VALIDATE           0x0Fu
 #define TZ_UI_STREAM_CB_REFILL             0xEFu
 #define TZ_UI_STREAM_CB_MAINMASK           0xF0u
 #define TZ_UI_STREAM_CB_EXPERT_MODE_FIELD  0xFAu
diff --git a/tests/generate/gen_integration.ml b/tests/generate/gen_integration.ml
index fb04e776e..d2c32a4b8 100644
--- a/tests/generate/gen_integration.ml
+++ b/tests/generate/gen_integration.ml
@@ -97,6 +97,7 @@ let reject ppf () =
   Button.(press ppf Both)
 
 let set_expert_mode ppf () = Format.fprintf ppf "set_expert_mode@."
+let set_blindsign_off ppf () = Format.fprintf ppf "set_blindsign_off@."
 
 type screen = { title : string; contents : string }
 
@@ -527,6 +528,7 @@ let gen_expect_test_sign ?(expert_mode = false) ppf ~watermark bin screens =
   start_speculos ppf signer.mnemonic;
   expected_home ppf ();
   if expert_mode then set_expert_mode ppf ();
+  set_blindsign_off ppf ();
   sign ppf ~signer ~watermark bin;
   expected_review_operation ppf ();
   Button.(press ppf Right);
diff --git a/tests/integration/nano/nanos/test_nanos_regression_batched_ops.py b/tests/integration/nano/nanos/test_nanos_regression_batched_ops.py
index 1fe7796c4..6061530b4 100755
--- a/tests/integration/nano/nanos/test_nanos_regression_batched_ops.py
+++ b/tests/integration/nano/nanos/test_nanos_regression_batched_ops.py
@@ -46,6 +46,7 @@ def test_nanos_regression_batched_ops(app):
     test_name = Path(__file__).stem
 
     app.setup_expert_mode()
+    app.setup_blindsign_off()
 
     message = Message.from_bytes("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")
 
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diff --git a/tests/integration/nano/snapshots/nanox/test_sign_too_long_operation/without_fee_or_amount/summary/00004.png b/tests/integration/nano/snapshots/nanox/test_sign_too_long_operation/without_fee_or_amount/summary/00004.png
new file mode 100644
index 000000000..471324463
Binary files /dev/null and b/tests/integration/nano/snapshots/nanox/test_sign_too_long_operation/without_fee_or_amount/summary/00004.png differ
diff --git a/tests/integration/nano/test_blindsign.py b/tests/integration/nano/test_blindsign.py
new file mode 100644
index 000000000..77d0686eb
--- /dev/null
+++ b/tests/integration/nano/test_blindsign.py
@@ -0,0 +1,204 @@
+#!/usr/bin/env python3
+# Copyright 2024 Functori <contact@functori.com>
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from pathlib import Path
+from typing import Callable
+
+from utils.app import Screen, Screen_text, DEFAULT_ACCOUNT
+from utils.message import Message
+from utils.backend import StatusCode
+
+test_path = Path(Path(__file__).stem)
+
+def _blind_sign(app, msg: str, navigate: Callable[[], None]):
+
+    app.setup_expert_mode()
+    app.setup_blindsign_on()
+
+    message = Message.from_bytes(msg)
+
+    data = app._sign(
+        DEFAULT_ACCOUNT,
+        message,
+        with_hash=True,
+        navigate=navigate)
+
+    app.checker.check_signature(
+        account=DEFAULT_ACCOUNT,
+        message=message,
+        with_hash=True,
+        data=data)
+
+    app.quit()
+
+def _blind_reject(
+        app,
+        msg: str,
+        status_code: StatusCode,
+        navigate: Callable[[], None]):
+
+    app.setup_expert_mode()
+    app.setup_blindsign_on()
+
+    message = Message.from_bytes(msg)
+
+    app._failing_signing(
+        DEFAULT_ACCOUNT,
+        message,
+        with_hash=True,
+        navigate=navigate,
+        status_code=status_code)
+
+    app.quit()
+
+
+basic_test_path = test_path / "basic"
+
+## Operation (0): Reveal
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 4
+# Public key: p2pk66m3NQsd4n6LJWe9WMwx9WHeXwKmBaMwXX92WkMQCR99zmwk2PM
+## Operation (1): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 2 XTZ
+# Storage limit: 7
+# Amount: 3 XTZ
+# Destination: tz3XMQscBFM9vPmpbYMavMmwxRMUWvWGZMQQ
+# Entrypoint: update_config
+# Parameter: Pair 5 True
+## Operation (2): Delegation
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 3 XTZ
+# Storage limit: 5
+# Delegate: tz2W3Tvcm64GjcV2bipUynnEsctLFz5Z6yRa
+## Operation (3): SR: send messages
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 6
+# Message (0):  6d65737361676530
+# Message (1):  6d65737361676531
+# Message (2):  6d65737361676532
+# Message (3):  6d65737361676533
+# Message (4):  6d65737361676534
+# Message (5):  6d65737361676535
+# Message (6):  6d65737361676536
+# Message (7):  6d65737361676537
+# Message (8):  6d65737361676538
+# Message (9):  6d65737361676539
+# Message (10): 6d6573736167653130
+# Message (11): 6d6573736167653131
+# Message (12): 6d6573736167653132
+# Message (13): 6d6573736167653133
+# Message (14): 6d6573736167653134
+# Message (15): 6d6573736167653135
+# Message (16): 6d6573736167653136
+# Message (17): 6d6573736167653137
+# Message (18): 6d6573736167653138
+# Message (19): 6d6573736167653139
+## Operation (4): Set deposit limit
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 3
+# Staking limit: 10 XTZ
+basic_operation = "0300000000000000000000000000000000000000000000000000000000000000006b00ffdd6102321bc251e4a5190ad5b12b251069d9b4c0843d0b0104020320182716513907b6bab33f905396d031931c07e01bddd780780c1a56b9c086da6c00ffdd6102321bc251e4a5190ad5b12b251069d9b480897a0c0107c08db701000278eb8b6ab9a768579cd5146b480789650c83f28effff0d7570646174655f636f6e6669670000000607070005030a6e00ffdd6102321bc251e4a5190ad5b12b251069d9b4c08db7010d0105ff01ee572f02e5be5d097ba17369789582882e8abb87c900ffdd6102321bc251e4a5190ad5b12b251069d9b48092f4010e0106000000fa000000086d65737361676530000000086d65737361676531000000086d65737361676532000000086d65737361676533000000086d65737361676534000000086d65737361676535000000086d65737361676536000000086d65737361676537000000086d65737361676538000000086d65737361676539000000096d6573736167653130000000096d6573736167653131000000096d6573736167653132000000096d6573736167653133000000096d6573736167653134000000096d6573736167653135000000096d6573736167653136000000096d6573736167653137000000096d6573736167653138000000096d65737361676531397000ffdd6102321bc251e4a5190ad5b12b251069d9b4c0843d0f0103ff80ade204"
+
+def test_blind_sign_basic_operation(app):
+    path = basic_test_path / "accept"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_accept, path)
+
+    _blind_sign(app, basic_operation, navigate)
+
+def test_blind_reject_basic_operation(app):
+    path = basic_test_path / "reject"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_reject, path)
+
+    _blind_reject(app, basic_operation, StatusCode.REJECT, navigate)
+
+
+### Operation containing a too large number ###
+
+too_large_test_path = test_path / "too_large"
+
+# Operation (0): SR: send messages
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 6
+# Message (0):  6d65737361676530
+# Message (1):  6d65737361676531
+# Message (2):  6d65737361676532
+# Message (3):  6d65737361676533
+# Message (4):  6d65737361676534
+# Message (5):  6d65737361676535
+# Message (6):  6d65737361676536
+# Message (7):  6d65737361676537
+# Message (8):  6d65737361676538
+# Message (9):  6d65737361676539
+# Message (10): 6d6573736167653130
+# Message (11): 6d6573736167653131
+# Message (12): 6d6573736167653132
+# Message (13): 6d6573736167653133
+# Message (14): 6d6573736167653134
+# Message (15): 6d6573736167653135
+# Message (16): 6d6573736167653136
+# Message (17): 6d6573736167653137
+# Message (18): 6d6573736167653138
+# Message (19): 6d6573736167653139
+# Message (20): 6d6573736167653230
+# Message (21): 6d6573736167653231
+# Message (22): 6d6573736167653232
+# Message (23): 6d6573736167653233
+# Message (24): 6d6573736167653234
+# Message (25): 6d6573736167653235
+# Message (26): 6d6573736167653236
+# Message (27): 6d6573736167653237
+# Message (28): 6d6573736167653238
+# Message (29): 6d6573736167653239
+## Operation (1): Register global constant
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 5 XTZ
+# Storage limit: 3
+# Value: 115792089237316195423570985008687907853269984665640564039457584007913129639936
+operation_with_too_large = "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"
+
+def test_blind_sign_operation_with_too_large(app):
+    path = too_large_test_path / "accept"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "too_large_warning")
+        app.navigate_until_text(Screen_text.Sign_accept, path / "blindsigning")
+
+    _blind_sign(app, operation_with_too_large, navigate)
+
+def test_blind_reject_operation_with_too_large_at_too_large_warning(app):
+    path = too_large_test_path / "reject_at_too_large_warning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_reject, path / "too_large_warning")
+
+    _blind_reject(app, operation_with_too_large, StatusCode.PARSE_ERROR, navigate)
+
+def test_blind_reject_operation_with_too_large_at_blindsigning(app):
+    path = too_large_test_path / "reject_at_blindsigning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "too_large_warning")
+        app.navigate_until_text(Screen_text.Sign_reject, path / "blindsigning")
+
+    _blind_reject(app, operation_with_too_large, StatusCode.REJECT, navigate)
diff --git a/tests/integration/nano/test_blindsign_reject.py b/tests/integration/nano/test_blindsign_reject.py
index 60f29ec05..46791cabd 100755
--- a/tests/integration/nano/test_blindsign_reject.py
+++ b/tests/integration/nano/test_blindsign_reject.py
@@ -27,12 +27,10 @@ def test_blindsign_reject(app):
 
     expression = Message.from_bytes("050092abf8e3d9e5f8cfd9ae8a9fe5f28ea1d5b5abf1af82dae8a4b68df3d1889eb6f988f5e8d31a")
 
-    app._failing_signing(DEFAULT_ACCOUNT,
-                         expression,
-                         with_hash=False,
-                         text=Screen_text.Sign_reject,
-                         status_code=StatusCode.PARSE_ERROR,
-                         path=Path(test_name) / "reject_from_clear")
+    app.parsing_error_signing(DEFAULT_ACCOUNT,
+                              expression,
+                              with_hash=False,
+                              path=Path(test_name) / "reject_from_clear")
 
     def expected_failure_send() -> bytes:
         with app.expect_apdu_failure(StatusCode.REJECT):
@@ -42,7 +40,7 @@ def expected_failure_send() -> bytes:
     path = Path(test_name) / "reject_from_blind"
 
     def navigate() -> None:
-        app.navigate_until_text(Screen_text.Blind_switch, path / "clear")
+        app.navigate_until_text(Screen_text.Accept_risk, path / "clear")
         app.navigate_until_text(Screen_text.Sign_reject, path / "blind")
 
     send_and_navigate(
diff --git a/tests/integration/nano/test_ensure_always_clearsign.py b/tests/integration/nano/test_ensure_always_clearsign.py
index 5bdca4697..243ea2487 100755
--- a/tests/integration/nano/test_ensure_always_clearsign.py
+++ b/tests/integration/nano/test_ensure_always_clearsign.py
@@ -30,6 +30,7 @@ def test_ensure_always_clearsign(app):
     test_name = Path(__file__).stem
 
     app.setup_expert_mode()
+    app.setup_blindsign_off()
 
     message = Message.from_bytes("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")
 
diff --git a/tests/integration/nano/test_regression_continue_after_reject.py b/tests/integration/nano/test_regression_continue_after_reject.py
index 70b587716..18e3b0568 100755
--- a/tests/integration/nano/test_regression_continue_after_reject.py
+++ b/tests/integration/nano/test_regression_continue_after_reject.py
@@ -25,6 +25,7 @@ def make_path(name: str) -> Path:
         return Path(test_name) / name
 
     app.setup_expert_mode()
+    app.setup_blindsign_off()
 
     app.reject_public_key(DEFAULT_ACCOUNT, make_path("reject_public_key"))
 
diff --git a/tests/integration/nano/test_sign_failing_noop.py b/tests/integration/nano/test_sign_failing_noop.py
index 4f4ec271a..ba6dbf622 100755
--- a/tests/integration/nano/test_sign_failing_noop.py
+++ b/tests/integration/nano/test_sign_failing_noop.py
@@ -25,6 +25,7 @@ def test_sign_failing_noop(app):
     test_name = Path(__file__).stem
 
     app.assert_screen(Screen.Home)
+    app.setup_blindsign_off()
 
     message = Message.from_bytes("03000000000000000000000000000000000000000000000000000000000000000011000000c6396630396632393532643334353238633733336639343631356366633339626335353536313966633535306464346136376261323230386365386538363761613364313361366566393964666265333263363937346161396132313530643231656361323963333334396535396331336239303831663163313162343430616334643334353564656462653465653064653135613861663632306434633836323437643964313332646531626236646132336435666639643864666664613232626139613834")
 
diff --git a/tests/integration/nano/test_sign_sc_rollup_execute_outbox_message.py b/tests/integration/nano/test_sign_sc_rollup_execute_outbox_message.py
index 0e61d14e9..96aab3577 100755
--- a/tests/integration/nano/test_sign_sc_rollup_execute_outbox_message.py
+++ b/tests/integration/nano/test_sign_sc_rollup_execute_outbox_message.py
@@ -29,6 +29,7 @@ def test_sign_sc_rollup_execute_outbox_message(app):
     test_name = Path(__file__).stem
 
     app.setup_expert_mode()
+    app.setup_blindsign_off()
 
     message = Message.from_bytes("030000000000000000000000000000000000000000000000000000000000000000ce00ffdd6102321bc251e4a5190ad5b12b251069d9b4904e02030400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c6396630396632393532643334353238633733336639343631356366633339626335353536313966633535306464346136376261323230386365386538363761613364313361366566393964666265333263363937346161396132313530643231656361323963333334396535396331336239303831663163313162343430616334643334353564656462653465653064653135613861663632306434633836323437643964313332646531626236646132336435666639643864666664613232626139613834")
 
diff --git a/tests/integration/nano/test_sign_sc_rollup_originate.py b/tests/integration/nano/test_sign_sc_rollup_originate.py
index dfe6f40fa..edd59e4fb 100755
--- a/tests/integration/nano/test_sign_sc_rollup_originate.py
+++ b/tests/integration/nano/test_sign_sc_rollup_originate.py
@@ -32,6 +32,7 @@ def test_sign_sc_rollup_originate(app):
     test_name = Path(__file__).stem
 
     app.setup_expert_mode()
+    app.setup_blindsign_off()
 
     sc_rollup_originate_with_missing_white_list = "030000000000000000000000000000000000000000000000000000000000000000c800ffdd6102321bc251e4a5190ad5b12b251069d9b4904e02030400000000c63966303966323935326433343532386337333366393436313563666333396263353535363139666335353064643461363762613232303863653865383637616133643133613665663939646662653332633639373461613961323135306432316563613239633333343965353963313362393038316631633131623434306163346433343535646564626534656530646531356138616636323064346338363234376439643133326465316262366461323364356666396438646666646132326261396138340000000a07070100000001310002"
 
diff --git a/tests/integration/nano/test_sign_too_long_operation.py b/tests/integration/nano/test_sign_too_long_operation.py
new file mode 100644
index 000000000..f69e138c2
--- /dev/null
+++ b/tests/integration/nano/test_sign_too_long_operation.py
@@ -0,0 +1,297 @@
+#!/usr/bin/env python3
+# Copyright 2024 Functori <contact@functori.com>
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from pathlib import Path
+from typing import Callable
+
+from utils.app import Screen, Screen_text, DEFAULT_ACCOUNT
+from utils.message import Message
+from utils.backend import StatusCode
+
+test_path = Path(Path(__file__).stem)
+
+def _sign_too_long(app, msg: str, navigate: Callable[[], None]):
+
+    app.setup_expert_mode()
+
+    message = Message.from_bytes(msg)
+
+    data = app._sign(
+        DEFAULT_ACCOUNT,
+        message,
+        with_hash=True,
+        navigate=navigate)
+
+    app.checker.check_signature(
+        account=DEFAULT_ACCOUNT,
+        message=message,
+        with_hash=True,
+        data=data)
+
+    app.quit()
+
+def _sign_decodable_too_long(app, msg: str, path: Path):
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "clear_n_too_long_warning")
+        app.navigate_until_text(Screen_text.Sign_accept, path / "summary")
+
+    _sign_too_long(app, msg, navigate)
+
+def _reject_too_long(
+        app,
+        msg: str,
+        status_code: StatusCode,
+        navigate: Callable[[], None]):
+
+    app.setup_expert_mode()
+
+    message = Message.from_bytes(msg)
+
+    app._failing_signing(
+        DEFAULT_ACCOUNT,
+        message,
+        with_hash=True,
+        navigate=navigate,
+        status_code=status_code)
+
+    app.quit()
+
+
+### Too long operation ###
+
+basic_test_path = test_path / "basic"
+
+## Operation (0): Reveal
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 4
+# Public key: p2pk66m3NQsd4n6LJWe9WMwx9WHeXwKmBaMwXX92WkMQCR99zmwk2PM
+## Operation (1): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 2 XTZ
+# Storage limit: 7
+# Amount: 3 XTZ
+# Destination: tz3XMQscBFM9vPmpbYMavMmwxRMUWvWGZMQQ
+# Entrypoint: update_config
+# Parameter: Pair 5 True
+## Operation (2): Delegation
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 3 XTZ
+# Storage limit: 5
+# Delegate: tz2W3Tvcm64GjcV2bipUynnEsctLFz5Z6yRa
+## Operation (3): SR: send messages
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 6
+# Message (0):  6d65737361676530
+# Message (1):  6d65737361676531
+# Message (2):  6d65737361676532
+# Message (3):  6d65737361676533
+# Message (4):  6d65737361676534
+# Message (5):  6d65737361676535
+# Message (6):  6d65737361676536
+# Message (7):  6d65737361676537
+# Message (8):  6d65737361676538
+# Message (9):  6d65737361676539
+# Message (10): 6d6573736167653130
+# Message (11): 6d6573736167653131
+# Message (12): 6d6573736167653132
+# Message (13): 6d6573736167653133
+# Message (14): 6d6573736167653134
+# Message (15): 6d6573736167653135
+# Message (16): 6d6573736167653136
+# Message (17): 6d6573736167653137
+# Message (18): 6d6573736167653138
+# Message (19): 6d6573736167653139
+## Operation (4): Set deposit limit
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 3
+# Staking limit: 10 XTZ
+basic_operation = "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"
+
+def test_sign_basic_too_long_operation(app):
+    _sign_decodable_too_long(app, basic_operation, basic_test_path / "accept")
+
+def test_reject_basic_too_long_operation_at_warning(app):
+    path = basic_test_path / "reject_at_too_large_warning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_reject, path / "clear_n_too_long_warning")
+
+    _reject_too_long(app, basic_operation, StatusCode.REJECT, navigate)
+
+def test_reject_basic_too_long_operation_at_summary(app):
+    path = basic_test_path / "reject_at_summary"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "clear_n_too_long_warning")
+        app.navigate_until_text(Screen_text.Sign_reject, path / "summary")
+
+    _reject_too_long(app, basic_operation, StatusCode.REJECT, navigate)
+
+
+### Different kind of too long operation ###
+
+## Operation (0): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 0 XTZ
+# Storage limit: 0
+# Amount: 10 XTZ
+# Destination: tz1er74kx433vTtpYddGsf3dDt5piBZeeHyQ
+## Operation (1): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 1
+# Amount: 1 XTZ
+# Destination: tz2PPZ2WN4j92Rdx4NM7oW3HAp3x825HUyac
+## Operation (2): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 2 XTZ
+# Storage limit: 2
+# Amount: 2 XTZ
+# Destination: tz1Kp8NCAN5WWwvkWkMmQQXMRe68iURmoQ8w
+## Operation (3): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 3 XTZ
+# Storage limit: 3
+# Amount: 3 XTZ
+# Destination: tz3fLwHKthqhTPK6Lar6CTXN1WbDETw1YpGB
+## Operation (4): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 4
+# Amount: 4 XTZ
+# Destination: tz3eydffbLkjdVb8zx42BvxpGV87zaRnqL3r
+## Operation (5): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 5 XTZ
+# Storage limit: 5
+# Amount: 5 XTZ
+# Destination: tz2JPgTWZZpxZZLqHMfS69UAy1UHm4Aw5iHu
+def test_sign_too_long_operation_with_only_transactions(app):
+    msg="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"
+    _sign_decodable_too_long(app, msg, test_path / "only_transactions")
+
+## Operation (0): Proposals
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Period: 32
+# Proposal (0):  ProtoDemoNoopsDemoNoopsDemoNoopsDemoNoopsDemo6XBoYp
+# Proposal (1):  ProtoGenesisGenesisGenesisGenesisGenesisGenesk612im
+# Proposal (2):  PrihK96nBAFSxVL1GLJTVhu9YnzkMFiBeuJRPA8NwuZVZCE1L6i
+# Proposal (3):  Ps9mPmXaRzmzk35gbAYNCAw6UXdE2qoABTHbN2oEEc1qM7CwT9P
+# Proposal (4):  PsBabyM1eUXZseaJdmXFApDSBqj8YBfwELoxZHHW77EMcAbbwAS
+# Proposal (5):  PsCARTHAGazKbHtnKfLzQg3kms52kSRpgnDY982a9oYsSXRLQEb
+# Proposal (6):  PsDELPH1Kxsxt8f9eWbxQeRxkjfbxoqM52jvs5Y5fBxWWh4ifpo
+# Proposal (7):  PtEdo2ZkT9oKpimTah6x2embF25oss54njMuPzkJTEi5RqfdZFA
+# Proposal (8):  PsFLorenaUUuikDWvMDr6fGBRG8kt3e3D3fHoXK1j1BFRxeSH4i
+# Proposal (9):  PtGRANADsDU8R9daYKAgWnQYAJ64omN1o3KMGVCykShA97vQbvV
+# Proposal (10): PtHangz2aRngywmSRGGvrcTyMbbdpWdpFKuS4uMWxg2RaH9i1qx
+# Proposal (11): Psithaca2MLRFYargivpo7YvUr7wUDqyxrdhC5CQq78mRvimz6A
+# Proposal (12): PtJakart2xVj7pYXJBXrqHgd82rdkLey5ZeeGwDgPp9rhQUbSqY
+# Proposal (13): PtKathmankSpLLDALzWw7CGD2j2MtyveTwboEYokqUCP4a1LxMg
+# Proposal (14): PtLimaPtLMwfNinJi9rCfDPWea8dFgTZ1MeJ9f1m2SRic6ayiwW
+# Proposal (15): PtMumbai2TmsJHNGRkD8v8YDbtao7BLUC3wjASn1inAKLFCjaH1
+# Proposal (16): PtNairobiyssHuh87hEhfVBGCVrK3WnS8Z2FT4ymB5tAa4r1nQf
+# Proposal (17): ProxfordYmVfjWnRcgjWH36fW6PArwqykTFzotUxRs6gmTcZDuH
+# Proposal (18): PtParisBxoLz5gzMmn3d9WBQNoPSZakgnkMC2VNuQ3KXfUtUQeZ
+# Proposal (19): ProtoALphaALphaALphaALphaALphaALphaALphaALphaDdp3zK
+def test_sign_too_long_operation_without_fee_or_amount(app):
+    msg="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"
+    _sign_decodable_too_long(app, msg, test_path / "without_fee_or_amount")
+
+
+### Too long operation containing a too large number ###
+
+too_large_test_path = test_path / "too_large"
+
+# Operation (0): SR: send messages
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 6
+# Message (0):  6d65737361676530
+# Message (1):  6d65737361676531
+# Message (2):  6d65737361676532
+# Message (3):  6d65737361676533
+# Message (4):  6d65737361676534
+# Message (5):  6d65737361676535
+# Message (6):  6d65737361676536
+# Message (7):  6d65737361676537
+# Message (8):  6d65737361676538
+# Message (9):  6d65737361676539
+# Message (10): 6d6573736167653130
+# Message (11): 6d6573736167653131
+# Message (12): 6d6573736167653132
+# Message (13): 6d6573736167653133
+# Message (14): 6d6573736167653134
+# Message (15): 6d6573736167653135
+# Message (16): 6d6573736167653136
+# Message (17): 6d6573736167653137
+# Message (18): 6d6573736167653138
+# Message (19): 6d6573736167653139
+# Message (20): 6d6573736167653230
+# Message (21): 6d6573736167653231
+# Message (22): 6d6573736167653232
+# Message (23): 6d6573736167653233
+# Message (24): 6d6573736167653234
+# Message (25): 6d6573736167653235
+# Message (26): 6d6573736167653236
+# Message (27): 6d6573736167653237
+# Message (28): 6d6573736167653238
+# Message (29): 6d6573736167653239
+## Operation (1): Register global constant
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 5 XTZ
+# Storage limit: 3
+# Value: 115792089237316195423570985008687907853269984665640564039457584007913129639936
+operation_with_too_large = "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"
+
+def test_sign_too_long_operation_with_too_large(app):
+    path = too_large_test_path / "accept"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "clear_n_too_long_warning")
+        app.navigate_until_text(Screen_text.Accept_risk, path / "too_large_warning")
+        app.navigate_until_text(Screen_text.Sign_accept, path / "blindsigning")
+
+    _sign_too_long(app, operation_with_too_large, navigate)
+
+def test_reject_too_long_operation_with_too_large_at_too_long_warning(app):
+    path = too_large_test_path / "reject_at_too_long_warning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_reject, path / "clear_n_too_long_warning")
+
+    _reject_too_long(app, operation_with_too_large, StatusCode.REJECT, navigate)
+
+def test_reject_too_long_operation_with_too_large_at_too_large_warning(app):
+    path = too_large_test_path / "reject_at_too_large_warning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "clear_n_too_long_warning")
+        app.navigate_until_text(Screen_text.Sign_reject, path / "too_large_warning")
+
+    _reject_too_long(app, operation_with_too_large, StatusCode.PARSE_ERROR, navigate)
+
+def test_reject_too_long_operation_with_too_large_at_blindsigning(app):
+    path = too_large_test_path / "reject_at_blindsigning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "clear_n_too_long_warning")
+        app.navigate_until_text(Screen_text.Accept_risk, path / "too_large_warning")
+        app.navigate_until_text(Screen_text.Sign_reject, path / "blindsigning")
+
+    _reject_too_long(app, operation_with_too_large, StatusCode.REJECT, navigate)
diff --git a/tests/integration/nano/test_sign_transaction.py b/tests/integration/nano/test_sign_transaction.py
index da6410109..e5398a554 100755
--- a/tests/integration/nano/test_sign_transaction.py
+++ b/tests/integration/nano/test_sign_transaction.py
@@ -61,6 +61,7 @@ def test_reject_transaction(app):
     path = test_path / "reject"
 
     app.setup_expert_mode()
+    app.setup_blindsign_off()
 
     message = Message.from_bytes("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")
 
@@ -114,9 +115,10 @@ def test_too_complex_transaction(app):
     app._failing_signing(DEFAULT_ACCOUNT,
                          message,
                          with_hash=True,
-                         text=Screen_text.Back_home,
-                         status_code=StatusCode.REJECT,
-                         path=path)
+                         navigate=(lambda: app.navigate_until_text(
+                             Screen_text.Back_home,
+                             path)),
+                         status_code=StatusCode.REJECT)
 
     app.quit()
 
diff --git a/tests/integration/nano/utils/app.py b/tests/integration/nano/utils/app.py
index b69f0d9bc..7591fe010 100644
--- a/tests/integration/nano/utils/app.py
+++ b/tests/integration/nano/utils/app.py
@@ -156,7 +156,7 @@ class Screen_text(str, Enum):
     Public_key_reject = "Reject"
     Sign_accept = "Accept"
     Sign_reject = "Reject"
-    Blind_switch = "Accept risk"
+    Accept_risk = "Accept risk"
     Back_home = "Home"
 
 class TezosAppScreen():
@@ -228,6 +228,42 @@ def setup_expert_mode(self) -> None:
         self.backend.both_click()
         self.assert_screen(Screen.Home)
 
+    def setup_blindsign_on(self) -> None:
+        self.assert_screen(Screen.Home)
+        self.backend.right_click()
+        self.assert_screen(Screen.Version)
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings)
+        self.backend.both_click()
+        # expert_mode screen
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings_blindsign_large_tx)
+        self.backend.both_click()
+        self.assert_screen(Screen.Settings_blindsign_on)
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings_back)
+        self.backend.both_click()
+        self.assert_screen(Screen.Home)
+
+    def setup_blindsign_off(self) -> None:
+        self.assert_screen(Screen.Home)
+        self.backend.right_click()
+        self.assert_screen(Screen.Version)
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings)
+        self.backend.both_click()
+        # expert_mode screen
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings_blindsign_large_tx)
+        self.backend.both_click()
+        self.assert_screen(Screen.Settings_blindsign_on)
+        self.backend.both_click()
+        self.assert_screen(Screen.Settings_blindsign_off)
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings_back)
+        self.backend.both_click()
+        self.assert_screen(Screen.Home)
+
     def _quit(self) -> None:
         self.assert_screen(Screen.Quit)
         try:
@@ -267,9 +303,8 @@ def expect_apdu_failure(self, code: StatusCode) -> Generator[None, None, None]:
 
     def _failing_send(self,
                       send: Callable[[], bytes],
-                      text: Screen_text,
-                      status_code: StatusCode,
-                      path: Union[str, Path]) -> None:
+                      navigate: Callable[[], None],
+                      status_code: StatusCode) -> None:
         def expected_failure_send() -> bytes:
             with self.expect_apdu_failure(status_code):
                 send()
@@ -277,7 +312,7 @@ def expected_failure_send() -> bytes:
 
         send_and_navigate(
             send=expected_failure_send,
-            navigate=(lambda: self.navigate_until_text(text, path)))
+            navigate=navigate)
 
     def provide_public_key(self,
                           account: Account,
@@ -293,9 +328,20 @@ def reject_public_key(self,
 
         self._failing_send(
             send=(lambda: self.backend.get_public_key(account, with_prompt=True)),
-            text=Screen_text.Public_key_reject,
-            status_code=StatusCode.REJECT,
-            path=path)
+            navigate=(lambda: self.navigate_until_text(
+                Screen_text.Public_key_reject,
+                path)),
+            status_code=StatusCode.REJECT)
+
+    def _sign(self,
+              account: Account,
+              message: Message,
+              with_hash: bool,
+              navigate: Callable[[], None]) -> bytes:
+
+        return send_and_navigate(
+            send=(lambda: self.backend.sign(account, message, with_hash)),
+            navigate=navigate)
 
     def sign(self,
              account: Account,
@@ -303,8 +349,10 @@ def sign(self,
              with_hash: bool,
              path: Union[str, Path]) -> bytes:
 
-        return send_and_navigate(
-            send=(lambda: self.backend.sign(account, message, with_hash)),
+        return self._sign(
+            account,
+            message,
+            with_hash,
             navigate=(lambda: self.navigate_until_text(Screen_text.Sign_accept, path)))
 
     def blind_sign(self,
@@ -316,7 +364,7 @@ def blind_sign(self,
         if isinstance(path, str): path = Path(path)
 
         def navigate() -> None:
-            self.navigate_until_text(Screen_text.Blind_switch, path / "clear")
+            self.navigate_until_text(Screen_text.Accept_risk, path / "clear")
             self.navigate_until_text(Screen_text.Sign_accept, path / "blind")
 
         return send_and_navigate(
@@ -327,15 +375,13 @@ def _failing_signing(self,
                          account: Account,
                          message: Message,
                          with_hash: bool,
-                         text: Screen_text,
-                         status_code: StatusCode,
-                         path: Union[str, Path]) -> None:
+                         navigate: Callable[[], None],
+                         status_code: StatusCode) -> None:
 
         self._failing_send(
             send=(lambda: self.backend.sign(account, message, with_hash)),
-            text=text,
-            status_code=status_code,
-            path=path)
+            navigate=navigate,
+            status_code=status_code)
 
     def reject_signing(self,
                        account: Account,
@@ -346,9 +392,10 @@ def reject_signing(self,
             account,
             message,
             with_hash,
-            text=Screen_text.Sign_reject,
-            status_code=StatusCode.REJECT,
-            path=path)
+            navigate=(lambda: self.navigate_until_text(
+                Screen_text.Sign_reject,
+                path)),
+            status_code=StatusCode.REJECT)
 
     def hard_failing_signing(self,
                              account: Account,
@@ -359,9 +406,10 @@ def hard_failing_signing(self,
         self._failing_signing(account,
                               message,
                               with_hash,
-                              Screen_text.Home,
-                              status_code,
-                              path)
+                              navigate=(lambda: self.navigate_until_text(
+                                  Screen_text.Home,
+                                  path)),
+                              status_code=status_code)
 
     def parsing_error_signing(self,
                               account: Account,
@@ -371,9 +419,10 @@ def parsing_error_signing(self,
         self._failing_signing(account,
                               message,
                               with_hash,
-                              Screen_text.Sign_reject,
-                              StatusCode.PARSE_ERROR,
-                              path)
+                              navigate=(lambda: self.navigate_until_text(
+                                  Screen_text.Sign_reject,
+                                  path)),
+                              status_code=StatusCode.PARSE_ERROR)
 
 DEFAULT_SEED = ('zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra zebra')
 
diff --git a/tests/integration/test_runtime.sh b/tests/integration/test_runtime.sh
index 591d7f922..127e121bd 100644
--- a/tests/integration/test_runtime.sh
+++ b/tests/integration/test_runtime.sh
@@ -185,6 +185,27 @@ set_expert_mode() {
     expected_home
 }
 
+set_blindsign_off() {
+    echo " - set_blindsign_off"
+    expected_home
+    press_button right
+    expected_version
+    press_button right
+    expect_full_text "Settings"
+    press_button both
+    # expect_section_content 'Expert mode'
+    press_button right
+    expect_section_content 'Allow Blindsigning' 'For Large Tx'
+    press_button both
+    expect_section_content 'Allow Blindsigning' 'ON'
+    press_button both
+    expect_section_content 'Allow Blindsigning' 'OFF'
+    press_button right
+    expect_section_content 'Back'
+    press_button both
+    expected_home
+}
+
 quit_app() {
     echo " - quit_app"
     expected_home