Reader SDK

Quick Start

Follow this guide to start taking cash and credit card payments with the Android and iOS Reader SDK sample app in 5 easy steps.


Step 1: Get Reader SDK credentials

Step 2: Configure the Reader SDK sample app

Step 3: Authorize Reader SDK and take a cash payment

Step 4: Customize the Checkout amount

Step 5: Take a credit card payment


Reader SDK lets you take cash payments in addition to credit card payments. This guide starts with cash transactions, which you can do right away, even without deploying the sample app to a physical device.

To take a credit card payment you must deploy the sample app to a physical device and have a Square Reader on hand. If you do not have a Square Reader, you can request a free Magstripe Reader or purchase a Square Reader online or in person.