What is the purpose of the CVV2?

The CVV2, or Card Verification Value 2, is primarily used as a security feature to validate card information during transactions, particularly in card-not-present situations such as online purchases. When a customer enters their credit card information, the CVV2 helps to verify that the person making the transaction has physical possession of the card, reducing the risk of fraud.

The CVV2 is not related to permanently locking a card account, indicating credit limits, or functioning as a discount code for merchants. Instead, its role is focused on enhancing security by providing an additional layer of verification that complements the card number and expiration date. This helps ensure that the transaction is legitimate and helps protect both the cardholder and the merchant from unauthorized use of the credit card.