n adding your card to Samsung Pay, a one-time password (OTP) may be requested by the card issuer to verify you are the cardholder. Once your card is approved, the card number is substituted with a unique alphanumeric identifier, making this more secure than using your actual card number.
You will need to use your fingerprint, PIN or iris scanner to authenticate a payment before the information is sent to the payment terminal. Once authenticated, the payment will be approved and sent back to the merchant. Only the payment network and your bank will have information about the transaction.
