Part 1. Setting Up the Dash Button
Getting your Dash button ready for hacking is pretty straightforward - you just need to go through the entire Amazon setup process minus selecting a product.
This setup requires the Amazon app, which is available for iOS and Android. Once logged in to Amazon inside of the app, go to Your Account -> Set up a new device. Select "Dash Button" and follow the instructions until you are prompted to select a product.
Close the app. Don't cancel setup; don't hit the x - just close the app. If you accidentally selected a product or are repurposing an old Dash button, just remove the device through the Amazon app and follow these steps again.
If you're looking to change how your button looks, peeling off the label sticker is easy.