Step 1: Get Reader SDK Credentials
Open the Square Developer Dashboard. You are prompted to sign in or create an account.
Create a Square application and name it Reader SDK Quick Start.
Choose the Reader SDK Quick Start application to open your Square application settings pages.
Open the Reader SDK page, and then choose Request Credentials to generate your Reader SDK repository password.
Keep your Reader SDK settings page open. You need the application ID and repository password to configure the Reader SDK sample application in the next step. Use the Generate Mobile Auth Code button to authorize the sample application in Step 3: Take a Cash Payment.