I. Location of UnionPay authentication code
On the back of each credit card, two sets of numbers are usually displayed in italics at the top of the end of the signature. The first four digits are the last four digits of the card number. The last three digits are commonly known as "the last three yards". It is a verification code set up by commercial banks to ensure the security of credit card passwords, and it is for bank cards to be used for indirect credit card consumption transactions. For example, online payment and other transactions, so the "last three codes" of credit cards cannot be leaked.
Therefore, everyone definitely needs to protect their privacy, especially since bank cards have involved money transactions. If you casually tell others this information, others may crack your bank card password and steal your bank card. In this case, your rights and interests will be infringed, so you must not tell others your password.
II. Specific introduction and analysis
UnionPay authentication code is the verification code used by users to check personal credit records through bank card verification, and users can make inquiries through the official website of the Credit Information Center of the People's Bank of China. Therefore, it is still necessary for everyone to check their personal information, so that they can confirm whether their personal information is safe. In fact, it is also necessary for many people, but most people are not particularly concerned.
In fact, it is also recommended that you check the relevant information on the Internet yourself, so that you can have a comprehensive understanding of this knowledge, and then you can make a choice according to your personal needs, but it is definitely necessary.