The cvv2 code of a credit card is its security code. This code is often used for security authentication in non-online transactions such as online transactions, telephone transactions, card activation, etc. Generally speaking, it will be printed at the signature of the card, about It is 7 numbers. The last 3 digits of these 7 numbers, such as 8888-140, are separated by spaces. 140 is the cvv2 code. In this regard, this code should be kept carefully. Otherwise, it may be used by illegal persons. For security authentication. Next, the editor of Jintou will introduce where the credit card cvv2 code is.

It is usually used to confirm that the payer has the credit card at the time of transaction to prevent credit card fraud. Therefore, to a certain extent, CVV2 The code is as important as the credit card password. Illegal criminals can steal the consumer's credit card by providing the consumer with the credit card number, expiration date and the 3-digit CV2 code on the back of the credit card.

In addition, when consumers shop abroad, Usually you can use cvv2 code for transactions, no password is required