CVV is an anti-fraud security feature to help verify that you are in possession of your credit card. For Visa/Mastercard, the three-digit CVV number is printed on the signature panel on the back of the card immediately after the card's account number. For American Express, the four-digit CVV number is printed on the front of the card above the card account number.
| VISA/MASTERCARD | AMERICAN EXPRESS |
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| A 3-digit number in reverse italics on the back of your credit card | A 4-digit number on the front, just above your credit card number |