The last three digits in the signature field of the credit card are the CVV2 code
The CVV2 code is a verification code or security code, which is used for verification in indirect bank card transactions (such as online payments) , the last three digits of the seven-digit signature field on the back of the bank card. You can only view it yourself through your own card.
If it is blurry, you can cover it with white paper and paint repeatedly to try to reveal it.
Warm Tips
1. If you change your bank card, the verification code will change. If you make multiple input errors and are locked, it will be restored the next day.
2. For account security, it is recommended not to disclose the CVV2 code to others at will.
(Response time: March 2, 2020. For the latest business changes, please refer to the official website of China Merchants Bank.)