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If your iPad supports Face ID (see Chapter 11 to learn more), you can also use the Top button to authorize purchases on the device:

 Using Apple Pay in a store. Double-press the Top button to use your default Apple Pay credit card. To learn how to set up Apple Pay, see Chapter 3.

 Confirming an app or in-app purchase. When you see the Double Click to Pay message on your iPad (see Figure 1.3), double-press the Top button to approve the purchase.

1.3 Double-press the Top button to authorize an app or in-app purchase.