The CVC (Card Verification Code) or CVV (Card Verification Value) is a three- or four-digit security number on the front or rear of a payment card. It is a security measure to verify the authenticity of credit or debit cards used in online transactions and to prevent fraud. The CVC is not embossed, unlike the card number, and is not printed on any receipts, making it unlikely to be known by anyone other than the card owner. The different names for the CVC are because various credit and debit card brands use their own terminology.

The CVC is required for all online payments where the card is not present and the PIN code cannot be entered. It is always the last three digits in case of VISA and MasterCard. The CVC is usually located on the back of the card, on the right side of the white signature strip. For American Express cards, the CVC is on the front.

To use the CVC of the card, all you have to do is make a purchase online and then provide the CVC in the payment window once you’ve entered the number and expiration date of the card. The CVC helps to safeguard debit and credit cards against fraud, theft, and unauthorized transactions. It ensures that only the card owner uses the card, and even if someone gets hold of the credit card number, they cannot transact without the CVC.