The credit card verification code can be viewed on the back of the relevant card. Among the two sets of numbers shown in italics at the end of the signature, the last three digits are the credit card verification code.
The purpose of using credit card verification codes is to verify the authenticity of the credit card user. The credit card verification code is also called the credit card security code.
The credit card verification code is generated by the credit card number, validity period and service restriction code through the encoding rules and encryption algorithm of the issuing bank. It is recommended that the cardholder can cut a small piece of tape and paste the CVV2 code to prevent Give way.