The name of the valid visa card number in 2021 is the name of the person handling it. Visa is the name of a credit card company in the United States, and the patient's credit card is called VISA card. When China began to develop its credit card business, in order to enter the international market, it did not have its own settlement network at that time, so it introduced Visa and MasterCard, two international credit card companies, with the brand name of issuing cards and Visa's credit card number as visa. The VISA card number is a sixteen-digit embossed card number, consisting of four groups. The first card number is fixed at four.

1. The difference between visa card and UnionPay card

Visa, MasterCard, and UnionPay all refer to card organizations. Abroad, VISA and MasterCard are the most popular. Users can understand payment methods such as WeChat payment, Alipay payment, UnionPay China UnionPay Express, etc. Cards issued by the corresponding card organization can only be swiped on supported machines for consumption (online shopping generally supports multiple card types of payment, although ordinary machines support two or three card types of payment).

2. How to maintain the overdraft card PIN code

Leaking the overdraft card PIN code is equivalent to revealing the login password. Credit card thieves only need to know the card number and PIN code to steal it from thousands of miles away. credit card. So, how to prevent your overdraft card PIN number from being leaked? First of all, when you swipe your card outside, be careful not to look at the overdraft card PIN number casually. If you are worried about the PIN code being leaked, you can use tape to block the PIN code. Secondly, if the credit card PIN is used for online transactions, remember to delete the credit card information automatically saved on the website.

To sum up, when applying for a VISA card, you can only spend money on machines that support VISA merchants (VISA, MasterCard, JCB, and AE have a wide support rate abroad, and UnionPay is working hard to support it more and more. come more and more). In general, most domestic machines only support UnionPay card payment. Once you realize that your overdraft card PIN code is at risk of being leaked, you can actively contact the issuing bank to replace the card to prevent damage.