The card code or CVV number ("Card Verification Value") on your credit card or debit card is a 3 digit number on VISA®, MasterCard® and Discover® branded credit and debit cards. On your American Express® branded credit or debit card it is a 4 digit numeric code.
Your card code can be located by looking on your credit or debit card, as illustrated in the image below:
Providing your card code to an online merchant proves that you actually have the physical credit or debit card - and helps to keep you safe while reducing fraud.
The card code is NOT your card's secret PIN (Personal Identification Number).
You should never enter your PIN number when asked to provide your card code. (PIN numbers allow you to use your credit or debit card at an ATM or when making an in-person purchase with your debit card or a cash advance with any credit card.)