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Credit Card Security Code
3 or 4 Digit Code
Also known as the Cardholder Verification Value or Card Identification, these three or four numbers help ensure that the physical card is in the cardholder's possession while shopping online or by phone, helping to prevent unauthorized or fraudulent use. (VISA refers to the code as CVV2, MasterCard calls it CVC2, and American Express calls it CID.)
Where can I find it?
The 3-digit code is located on the back of your card, inside the signature area. Typically the signature panel will have a series of numbers, but only the last three digits make up the CVV2 code. American Express has a 4-digit number on the front of their card
VISA, MasterCard, Discovery

American Express

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