What is a credit or debit card CVN (Card Verification Number)?
The Decisioneering Web Store accepts only Visa, MasterCard, and American Express credit or debit card numbers with valid CVNs. A CVN is a number on the back of your card that helps ensure security. While card numbers and expiration dates are relatively easy to obtain without permission of the card holder, usually someone must have physical possession of the card to enter the CVN.