3D Secure protects the cardholder against unauthorised use of their card(s) for making online payments. When you use a MasterCard or VISA card that has 3D secure, it means that you get a token via SMS or e-mail to complete the payment you are making in order to prove it is you. Where your payment card is not 3D Authenticated, you will need to contact your Bank to activate 3D secure in it, otherwise, your transaction is likely to fail. We're highly regulated to accept payments only from 3D Secured Cards. As part of our transparency policy, this is to curb financial fraud on our website!.