To prevent fraudulent charges, most merchants require customers to provide their debit or credit card number, its expiration date and a numeric code — known as a card security code — located ...

CVV stands for card verification value. It’s a three- or four-digit number found on most debit and credit cards. There are several other acronyms for this security feature within the industry.

Investopedia / Jiaqi Zhou A personal identification number (PIN) is a numerical code used ... may influence the security checks implemented by the issuing bank. Is My Debit Card's CVV Number ...