The CVV Number ("Card Verification Value") on your credit card or debit card is a 3 digit
number on VISA® and MasterCard® branded credit and debit cards. On your American Express® branded credit or debit card it is a 4 digit numeric code.
Your CVV number can be located by looking on your credit or debit card, as illustrated in the image below:
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.