Regarding the question of "whether it is necessary to sign to confirm the consumption", I asked several bank credit card people. A person from the credit card department of a joint-stock bank admits that when the cardholder swipes the card, he only needs to enter the correct password and press the confirm key, and the transaction will take effect immediately. However, if the cashier finds that the signature does not match in the process of checking the signature, he has the right to cancel the consumption and refuse to sell the goods. "This is the significance of choosing credit card' password+signature' to confirm consumption."

At the same time, according to the provisions of the Labor Contract Law, shopping malls are not allowed to charge any form of deposit to employees.

Therefore, the practice of shopping malls is neither legal nor reasonable.