3D Secure, also known as payer authentication, is required for all credit and debit card orders.
The 3D Secure program offered by Visa is branded “Verified by Visa.”
The verification process is handled on the card provider’s site and may consist of entering a password or a one-time authentication code sent to your mobile device.
If you are not currently enrolled in your card issuer’s 3D secure program, you will be prompted to enroll the first time you add your credit or debit card.