Li Wei analysis, "signature" consumption of credit cards never need to enter a password, so there is no problem of password leakage. However, under the signature confirmation system, if a fake signature is stolen, both the merchant and the bank will bear great responsibility. "Because in the relevant laws and regulations of credit cards, it is clearly required that the acquirer should bear the responsibility of checking the signature of the credit card, which means that once the credit card is stolen, if it is identified as a false signature through handwriting identification, the merchant and the acquirer will bear most of the responsibility. If the signature is realistic and the cashier of the merchant cannot tell the truth, then the insurance company will pay the bank according to the agreement, and the cardholder does not need to bear the loss. " He is eloquent.