How do I make payment in stores with an iPhone?
Pay with iPhone with Face ID
-To use your default card, double-click the side button, then glance at your iPhone to authenticate with Face ID, or enter your device passcode.
-Hold the top of your iPhone within a few centimetres of the contactless reader until you see Done and a tick on the display.
Pay with iPhone with Touch ID
-To use your default card, rest your finger on Touch ID.
-Hold the top of your iPhone within a few centimetres of the contactless reader until you see Done and a tick on the display.
For more information click here.
https://www.beyondbank.com.au/need-help/how-do-i-make-a-payment-in-stores-with-an-iphone