a bank receipt is an effective voucher to show that an individual or an organization is handling business in a bank.
The bank receipt can be used by users to check whether the transaction information is wrong, and it can also be used as a voucher for this transaction. There may be important information such as your card number information, the bank where you opened the account, and the cardholder's signature on the bank receipt. If this information is mastered by others, you may use some means (making an identical card, etc.) to steal the amount in your card.