In this page you'll learn how to start with digital cards in your Android app.
To generate Google Pay passes, you will need to create an account, register your project and connect it to the Google Pay API for Passes Merchant Center. Read more about it here.
Before you can use digital cards in your apps, you will need to learn how to design a template. This is described in your guides located here.
Once you have create at least one pass template, you can start generating digital cards. This is described in your guides located here.