This is because the credit card has no transaction password when it is activated, and only the signature can be used for transaction.

Credit cards generally have two passwords, and it is best not to set them the same:

1. Password inquiry: used for online banking login or telephone inquiry;

Second, the transaction password: used for credit card consumption or ATM cash withdrawal (or no transaction password, only signature consumption).

There is no password for credit card deposits at the bank counter. After making a deposit, the bank will give the depositor a deposit stub.