Uploaded June 2019 | Updated September 2026, 2 hours ago

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A guide on setting up a Ruby backend to handle a nonce generated from the In-App Payments SDK in your mobile app.

We'll cover:
- What a basic Ruby backend looks like
- What is a nonce?
- How do we process a nonce using the Square Ruby SDK?
- Testing some error messages

Links:
Square In-App Payments SDK Documentation:
https://squ.re/2ZJvFZO

Developer Community: https://squ.re/slack
Twitter: @SquareDev