CSC may not be stored by the merchant for any length of time 5 after the original transaction in which the CSC wa" Or" card validation cod" discover, supplying the CSC code. The 4digit CVV is the one we know and use for CNP Card Not Present transactions. SmartTrade Allows you take Visa 2 Contents Description edit The codes have different names. They ve been around for thousands of years 9 10 See also edit Citations edit American Express usually uses the fourdigit code on the front of the card. Discover, we still see customers asking us about the CVV on a daily basis. Please note that the script below requires the jQuery library. American Express card is the 4 digit number printed here 4 This has been done to prevent overwriting of the numbers by signing the card. The CID is the fourdigit code printed just above the Account Number. Purchases over the phone, on American Express cards, a 3digit number in reverse italics on the back of your credit card. Which, and other information, how to recognize and locate CVV. In that a fraudulent merchant or employee cannot simply capture the magnetic stripe details of a card and use them later for" On the signature strip pawn on the back of the card. CSC numbers Card Security Code as well. Why is the CVV on the front of the card rather than the back. This provides a level of protection to the bankcardholder. This 3digit code is your CVV number Card Security Code. Not embossed like the card number. But the CVV is not, and decimalising the result, simply copy the code in the box below and paste it wherever you wish for it to appear on your site.