3D Secure (also called Verified by Visa, Mastercard SecureCode) is an authenticated payment system which allows for increased security when making online purchases. When paying, your bank verifies the identity of the card holder before confirming the transaction. Your bank offers you this service free of charge for your payments via debit card, Visa and Mastercard.
After confirming your bank details, you will be redirected to your bank’s site. The 3D Secure window will be displayed, the authentication process you need to complete is different for each bank.
You may be asked to enter a code that you have received via SMS, or enter your date of birth, or answer a personal question,...
After confirmation from your bank, your payment is validated and your transaction is completed.
For any questions about 3D Secure (how to get it, loss/modification of password...) and on the authentication procedure, please contact your bank directly.