For example, with Visa and Mastercard, the CVV is typically a three-digit number found on the back of the card, near the signature strip. However, American Express cards use a four-digit security ...

First, not all Visa gift cards may work as debit or credit cards on Amazon. Some may require users to use a CVV to authorize a purchase. Since Amazon doesn't ask for this information while adding ...

How do debit and credit cards ... information to make a sale. The card details are sold with the necessary details to make the purchase, such as the card number, card holder’s name and the CVV ...