Is the four-digit (front) American Express security code?
So, what is the 3-digit number on the back (next to the signature) called? Why does American Express require both a four-digit code and a three-digit card?
The four-digit code on the front of your American Express card is the Card Identification Number (CID), used for verifying your card in transactions. The three-digit number on the back is the Card Security Code (CSC) or CVV, which is used mainly for online and phone purchases. Having both codes helps keep your card secure by adding extra layers of verification.
I have learned that the American Express security code, also known as the Card Security Code (CSC) or Card Verification Value (CVV), is a three-digit number found on the back of my card. This code is crucial for online transactions as it helps verify that I have the physical card in hand, adding an extra layer of security against fraud. When I make a purchase online, I may also encounter SafeKey, which is an additional security feature that sends a one-time verification code to my registered mobile number or email. This code is typically six digits and must be entered during the checkout process to confirm my identity. It’s important to keep my contact details up to date with American Express to ensure I receive these verification codes without any issues. Overall, these security measures help protect my account and personal information while shopping online.