The CVV is a 3- or 4-digit code printed on your credit card. It's a fraud-prevention measure designed to make it harder to use info stolen in a data breach.

The card verification value (CVV) adds an extra layer of security to your purchases—here's how it works.

RupPay Credit Card and Debit Card users will now be able to make e-commerce online transactions without the need to share CVV. This will be, however, applicable only to tokenised cards.

The dynamic CVV is displayed on the back of such a card in e-ink and changes according to an algorithm supplied by Visa. Credit card fraud has long been a problem in the US.

French banks are about to find out if credit cards with dynamic security codes can do away with card-not-present fraudulent transactions.