What do the three digits behind the credit card represent?

The three digits behind the credit card are the CVV2 verification code. Many people also call it the security code, which is used in many transactions. Three digits. Many domestic airlines and hotel websites now use this set of digits when paying with credit cards. Its importance is as important as the password.

When making transactions abroad, you generally only need the credit card, validity period, and CVV2 verification code to complete the transaction. Therefore, if you lose your credit card abroad, you must report the loss in time to prevent your personal credit card from being stolen. This transaction method allows Many domestic credit cards have been stolen abroad.

In order to prevent the CVV2 verification code from being leaked, many people directly use tools to erase it. This does not affect the use of the credit card without excessively damaging the card body. However, I would like to remind everyone to remove the credit card security code. Once forgotten, there is no way to find it. If you want to use the security code for online transactions or telephone transactions, you can only change the card.

In fact, there is no need to erase this set of numbers when using a credit card. Just stick it with opaque tape to prevent leakage. Also, when using CVV2 verification code for online transactions, you must ensure the security of the network environment. Another method is to set a credit card consumption limit, which can avoid large-scale theft after the credit card is lost and ensure the safety of funds.

How to check the last three digits of a credit card with these few steps?

Many cardholders are accustomed to using quick payment and unknowingly forget the last three digits of their credit card. Some cardholders We often encounter situations where we forget to bring our credit card when we go out, or the credit card is too old and the CVV2 code is worn out, so how do we check the last three digits of the credit card at this time? Card friends, don’t worry, let me tell you.

The importance of the last three digits of the credit card

The three digits on the back of the card are the CVV2 verification code, which is used when the credit card is used for online payment, online consumption and other indirect card consumption occasions. The one used generally refers to the last three digits of the seven-digit signature field on the back of the credit card. The last three digits of a credit card are used to confirm whether the card owner is making the transaction. It is a verification code used for identity verification. Its importance is almost equal to that of the password. Once leaked, it is very easy to cause the credit card to be stolen.

How to check the last three digits of a credit card

After understanding the importance of the last three digits of a credit card, let’s take a look at how to check the last three digits of a credit card.

1. If the cardholder has forgotten the CVV2 code, he or she can call the customer service number. After verifying your identity (mainly filling in the content when applying and entering the relevant password), the customer service staff will inform you of these three Number;

2. If cardholders are concerned about safety, it is best to choose to change their card or report the loss and apply for a new one. This is also a good way to check the last three digits of the credit card.

The above is the answer to the question of how to check the last three digits of a credit card. I believe that card friends will have a deeper understanding of the importance of the last three digits of a credit card after reading this. We remind everyone to protect your CVV2 code. If necessary, you can use a knife to scratch it or smear it until it cannot be seen clearly to prevent credit card theft.

What are the last three digits on the back of a credit card?

Definition, the last three digits of a credit card are the last three digits. CVC (CardVerificationCode) is the credit card verification code. It is an additional code printed on the back of the credit card, also known as CVV.

Usage introduction, (CardVerificationValue), which is the credit card verification value. It appears on the back of the credit card, at the top of the signature area in italics. The first four digits are, and the last three digits are the verification code, that is, the last three digits. Note that this verification code does not refer to the credit card password. To book a flight over the phone, you only need to enter the bank and the three digits behind it, as well as the expiration date of the credit card. No password is needed at all.

Yesterday at noon, Ctrip customer service staff told reporters that the information required to purchase air tickets through a credit card is: credit card validity period, the "last three digits" verification code, and the cardholder's ID number.

Effectively prevent account theft.

Users panic behind the convenience, "The last three codes are extremely critical in offline transactions, which brings convenience to cardholders and merchants. We cooperate with qualified merchants , the merchant freezes a portion of the cardholder's funds before consumption, and the merchant can formally deduct the funds after the cardholder signs the transaction.

What is the use of the last three digits on the back of the credit card?

It plays a role in security protection. The credit card security code is a set of 3 or 4 digits on the credit card. The generation method is that the bank extracts and sorts the card account number, expiration date, and service code, and then processes it. A series of complex algorithms are calculated.

After generating this number, only the issuer and cardholder can know what the number is. The credit card security code is the security code for online or phone transactions. Used to verify whether the payer has a credit card at the time of transaction to prevent credit card fraud! If the information is disclosed, you can call customer service to change the card. The security code will be changed after the card is replaced.

Extended information

1. Identification

The "last three digits" are the last three digits on the back of the credit card at the signature. It is also called the CVV or CVC code. After the card is issued, Generated by the bank's encoding rules and encryption algorithm. Generally speaking, these three numbers are unique and used to identify individuals, and payment will generally not be possible if entered incorrectly.

2. There is certain authorization<. /p>

During the use and payment process, if the merchant provides the "last three digits" to the bank, the bank will by default obtain the cardholder's authorization for the merchant to allow the transaction.

3. Prevent fraudulent use

Banks have strict supervision over credit cards. For example, if a credit card with an overdraft limit of 50,000 yuan is overdrawn all at once in a short period of time, if the card issuer suspects that the card has a tendency to cash out , the cardholder will be reminded. If the reminder is invalid, the right to use the credit card will be terminated.