The cashier can use the Device Account Number to find the purchase and process the return, just like they would with a traditional credit or debit card payment. To see the last four or five digits of the Device Account Number:

• For your iPhone or iPad, go to Wallet, tap the card, and tap the i information symbol..
• For your Apple Watch, open the Watch app on your iPhone, go to the My Watch tab, tap Wallet & Apple Pay, then tap your card.

If the cashier needs your card details to process the return, you can follow the same steps for making a payment:

1. On the device that you used to make the original payment, select the card that you want to be refunded. Remember to use the card registered within Apple Pay, not your physical card.
2. On your iPhone, hold the device near the reader and authorise the return with Touch ID or passcode. On your Apple Watch, double-click the side button and hold the display of your Apple Watch within an inch of the contactless reader.

Depending on the return and refund policies of the store, it may take up to several days for the return transaction to appear on your credit or debit card statement.