Card Identification Number (CID) / CVV.In contrast, all Visa, MasterCard and Discover card numbers are 16-digit long, spaced in four even groups of four digits each. The numbers have no alterations and are spaced in groups of four, six and five digits, as follows: “xxxx xxxxxx xxxxx”. American Express card numbers are all 15-digit long.This rule applies to all American Express cards. All AmEx account numbers are embossed on the card and begin with “37” or “34”. There are various different types of American Express designs, which means that not all of the brand’s cards will display all of the security features that follow, but most of them will. Still, as is the case with Visa and MasterCard, it would take a trained eye just a few seconds to validate that these features have not been tampered with. American Express Security Code And FeaturesĪmerican Express have the most unique design among the major payment cards, which is mostly to be found in the cards’ security features. It is important to understand that the American Express security code and its counterparts at the other card brands are a part of a broader ecosystem of security features, which together help to reduce fraud and keep sensitive information safe. The card security codes are known by different names and abbreviations and the various payment networks which have instituted them are placing those security features at different locations within their cards, as explained in the table below: That being said, the rules are all quite straightforward and in any case they have more features in common than differences. It should be noted that there is no universal standard governing the use of card security codes across all payment brands and so each one keeps its own set of rules. In other words, your credit card CVV code is another way to help keep your credit card information safe online. In such circumstances, asking for your credit card CVV is helpful for both parties in the transaction, because a potential fraudster will not have access to it if they stole your credit card number (or bought it on the black market online), but don’t have the actual plastic piece, on which it is embossed. As you are not in front of them when the payment is made online or over-the-phone, the merchant cannot verify your identity with a photo ID or by comparing your signature to the one on the back of the card. This three-digit Visa, MasterCard and Discover code and the four-digit American Express CVV tell the merchant that you are in actual possession of the card and also protects you from credit card fraud.
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