what is security code(cvv)
A card security code (CSC; also called card verification data (CVD), card verification number, card verification value (CVV), card verification value code, card verification code (CVC), verification code (V-code or V code), card code verification, or signature panel code (SPC)) is a term for a security feature for card not present payment card ...
WHAT IS MY CVV NUMBER? The Card Verification Value (CVV*) is an extra code printed on your debit or credit card. CVV for Visa, MasterCard, BankCard and Diners is the final three digits of the number printed on the signature strip on the back of your card. CVV for American Express appears as a separate 4-digit code printed on the front of your card.