What is the CVV?
CVV stands for Creditcard Validation (or Verification) Value. Visa, MasterCard, American Express and Discover all have a version of the CVV to reduce risk in Card-Not-Present transactions (like Internet, telephone or mail-order). The CVV is a 3 or 4 digit code embossed or imprinted on the reverse side of Visa, MasterCard and Discover cards and on the front
of American Express cards. The CVV code adds assurance that the consumer placing the order has access or physical possession of the credit card itself in order to use the CVV code.