Now the office is paperless, and many trading systems do not print the customer receipt, but only print the summons signed by the customer as a document binding and storage.

Banks accept business by ticket, and the ticket is the acceptance certificate. There must be at least two bills, one as the basis for acceptance and the other as the customer receipt, which will be returned to the customer after being sealed by the bank as the voucher for handling business.

As long as it is stamped, it means that the bank has accepted it. If the banking system and the transportation department are linked, they only need to pay in the banking system without subsequent customer operations.