The CVV Number (“Card Verification Value”) on your credit card or debit card is a 3 digit number located on the back of most credit and debit cards. On American Express®, credit or debit cards, a 3-4 digit number is printed on the card’s front side.
Providing your CVV number to an online merchant proves that you actually have the physical credit or debit card – and helps to keep you safe while reducing fraud.
CVV numbers are NOT your card’s secret PIN (Personal Identification Number).