MasterCard SecureCode

 
The 3D Secure technology is designed to reduce the possibility of fraudulent card use by authenticating the cardholder at the actual time of the transaction and subsequently protect him or her against unauthorized use of the card. MasterCard SecureCode authentication requires the cardholder to register their card on the card issuer’s website to take advantage of this service.
 
If you are registered, at the time of payment, a screen from your card issuer will prompt you to enter the unique personal code that you have registered with them. The card issuer then validates your personal code and approves the transaction.
 
If you are not registered, but the bank that issued your MasterCard supports SecureCode, you may be prompted to sign up for MasterCard SecureCode as you check out. You can also activate your current card now.