If your cvv2 code is not clearly displayed, you can try to cover it with white paper and then draw it with a pencil to see if it can be displayed. If not, you can only change the card.
What is the code 1? CVV2？
The CVV2 code, that is, the credit card security code, is the security code of the credit card for online or telephone transactions, which needs to be viewed through the card. Cannot query by other means. CVV2 is a number printed in the signature area of Visa/Master Card card. It is located in the 3 digits after the credit card number. The last three digits we usually see on the back of credit cards are actually CVV2, not CVV2 codes.
I forgot how to check the validity of the credit card.
How to check the validity period of credit card 1 forgot. The words "VALIDFROM and VALIDTHRU" are printed below the card number: VALIDFROM is the date of issuance; VALIDTHRU is the validity period of the credit card, which is the validity period of the credit card. Date format is month/year. For example, VALIDTHRU 12/ 10 means that your credit card is valid for 2010 65438+February.
2. You can call customer service by credit card within the validity period. Or from the date of receipt of the credit card+the length of the credit card validity period (five or eight years), you can get the validity period of the credit card. This algorithm may sometimes have an error of several months. For example, a credit card received at 5438+ 10 may be valid in September. When the cardholder inquires about the CVV code (only the computer has the CN code) and the validity period of the credit card, he can call the credit card center. Customer service should first verify their identity, ask for some information when reporting, and enter a password (usually a query password). After confirmation, he will inform the relevant information.
3. What's the difference between 3.CVV 2?
The security code for classifying VISA cards is called CVV2 (card verification value 2), which has 3 digits and is printed on the last 4 digits of the card number on the back of the credit card. MarsterCard's security code is called CVC2 (Card Verification Code 2), which has 3 digits and is printed on the last 4 digits of the card number on the back of the credit card. The security code of Discover card is called Cardmember ID, which has 3 digits and is printed on the signature column on the back of the credit card. The security code of American Express is called CID (Card Identification Number), which has 4 digits and is printed on the front of the credit card above the credit card number. The security code of China UnionPay is called CVN2 (card verification number 2), which has 3 digits and is printed after the 4 digits of the card number on the back of the credit card. The security code of JCB card (Japan Credit Bureau) is called CAV2 (card authentication value 2), which has 3 digits and is printed on the back of the credit card number.