3D Secure Cards!
3D Secure is led by the credit card schemes and is designed to make online shopping transactions safer by authenticating a cardholder's identity at the time of purchase, through the likes of Verified by Visa and MasterCard SecureCode.
Unfortunately, if you own one of these Cards, it won't work with the Bot. If you don't know if your card is secured or not, please contact your Bank.
You can use a prepaid card (not a prepaid gift card).