Processing a credit or debit card transaction In the Order Summary pane, tap PAY NOW. In the Select Payment type pane, tap a button for a credit or debit card. To fulfill your payment, complete one of these steps: Scan your credit or debit card using the integrated scanner. Tap your credit or debit card on the integrated radio-frequency identification (RFID) reader. Note: Mobile wallet transactions are only applicable to an RFID reader. Swipe your credit or debit card through the integrated magnetic stripe reader (MSR). Tap I'm Finished.