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CVV Security Code on Credit Cards

3-Digit Security Code Three little numbers offer strong protection (from Visa.com)

Security Concern “How does my Visa card prevent fraud?” 

Solution The code on the back of your card is proof that it’s in your hands.

Benefits These three digits let online and telephone merchants confirm that you’re in possession of your card.

How it Works If someone trying to make a fraudulent online or phone purchase gets the numbers wrong, the merchant may cancel the transaction. S

 

Where can I find it? What does it do? 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. What does it do? It’s actually more about what it prevents. When shopping online or over the phone, the 3-digit code helps merchants ensure that the card is in the right hands. Merchants will request the CVV2 at checkout from the cardholder, and the information is sent electronically to the card-issuing bank to verify its validity. Within seconds the CVV2 results are returned with authorization. If it’s returned invalid, merchants have the right to stop the transaction. And for your added protection, merchants are prohibited from keeping or storing the CVV2 number after the transaction has been completed.