what is the cvv on a debit card

The CVV (Card Verification Value) on a debit card is a 3-digit number for VISA, MasterCard, and Discover branded cards, and a 4-digit number for American Express branded cards. It is a security code used to prevent fraud during online or phone transactions. The CVV is not the same as the PIN (Personal Identification Number) and is typically used for online or phone transactions, while the PIN is often used for in-person payments or ATM transactions. It is usually located on the back of the card, but in some cases, it may be found on the front. The CVV adds an extra layer of protection to help avoid credit card fraud and is considered sensitive authentication data, which merchants are required to protect and delete after the purchase is authorized.