The City of Madison is the largest city in Dane County and the State Capital of Wisconsin. Our highly educated population, coupled with a strong mid-western work ethic, makes for an engaged workforce.
To help reduce fraud in the card-not-present environment, credit card companies have introduced a card code program. Visa calls this code Card Verification Value (CVV); MasterCard calls it Card Validation Code (CVC); Discover calls it Card ID (CID). The card code is a three- or four- digit security code that is printed on the back of cards. The number typically appears at the end of the signature panel.
CVV stands for Card Verification Value (Discover Card calls it the Cardmember ID). 1  It is the three-digit number printed in the signature space on the back of most credit cards, such as Visa, Mastercard, and Discover cards.2  It is a four-digit number on the front of American Express cards. It is the three-digit number printed in the signature space on the back of most credit cards, such as Visa, Mastercard, and Discover cards. 2  The CVV2 number is always the last group of numbers in the signature space on the back of the card. 3  It is not part of your regular credit card number.