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.
The CVN code (or CVV2/CVC2) is a special 3-4 digit code used as an additional security measure for online transactions. On most cards, this number is a 3-digit code on the back of your card, near the signature strip. On American Express cards, the 4-digit code is above and to the right of your card number on the front of the card.