When you add your debit card to a digital wallet, a virtual card is created. It has a unique virtual number associated with the device you are using.
Digital wallet payments also use a unique transaction number each time you shop to keep your card information private.
For in-store purchases, hold your smartphone or smartwatch near the contactless reader and follow the screen prompts to verify your purchase. Near-field communication (NFC) technology is used to transmit virtual payment information between your mobile device and the merchant.