About 3D Secure
3D Secure protection system
The 3D Secure system allows banks to ensure that the cardholder is definitely the person behind a particular online card payment. In other words, 3D Secure is used to identify the person using a card to pay online - usually with a short verification code sent by SMS. This system is sometimes otherwise known as MasterCard SecureCode or Verified by Visa.
With Lydia, you'll only be asked for your card number and the 3-digit CVV number which can be found on the back of the card.