Debit cards and prepaid gift cards also use this number format with each of them having a unique card number, expiration date and CVV code. By having these features, debit cards and prepaid gift ...

is a crucial security feature found on credit and debit cards. This three- or four-digit number helps verify that the cardholder has physical possession of the card, especially during online or ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Toby Walters is a financial writer, investor, and lifelong learner. He has a passion for ...