The signature column on the back of the industrial and commercial bank card is a function set by the bank for the safety of customers. If the signature does not match, the mall may not sell the relevant goods. With the signature, you can get back the card that was eaten by the machine. The relevant information about the signature is as follows:

1. Failure to endorse a credit card will affect consumption abroad.

2. Avoid too neat signature.

With the signature, you can get back the card that was eaten by ATM.

4. If the signature does not match, the mall can refuse to sell the relevant goods.