(Card Verification Value)
The CVV is the three character code located on the back of MasterCard, Visa, and Discover credit or debit cards. It is to the right of the signature area.
On American Express cards, the CVV is located on the front of the card towards the right.
The CVV is a security feature. It is also referred to as CSC, CVD, CVV, CVV2, CVVC, CVC, CVC2, V-Code, V Code, and CCV.