The following describes the information system for a supermarket: Customers push their shopping carts to the checkout register where a clerk processes the sale. The market has several registers, but they are not all in continuous use depending on the level of business in the market. During busy times, employees will be taken from other jobs such as stocking shelves and unloading trucks to man a register. This is done quickly and efficiently since the registers are not assigned to specific clerks, thus eliminating the need to logon to the system. At the beginning of the shift, the supervisor places $100 in small bills in each register (float) to enable the clerks to make change. The supervisor signs a log in the treasury office indicating that he has taken custody of the float and places the cash drawers into the respective registers. Sales to customers are for cash or credit card only, with the majority of sales being cash. The clerk receives the cash from the customer, makes change, and issues a receipt for the purchase. For credit card sales, the clerk swipes the card and obtains online approval from the card issuer at the time of sale. The customer then signs the credit card voucher, which the clerk places in a special compartment of the cash register drawer. The customer receives a receipt for  the purchase and a copy of the credit card voucher. At the end of the shift, the supervisor returns the cash register drawers containing the cash, checks, and credit cards receipts to the treasury clerk and signs a log that he has handed in the cash drawers The clerk later counts the cash and credit card receipts. Using a stand-alone PC, he records the total sales amounts in the sales journal and the general ledger sales and cash accounts. The treasury clerk then prepares a deposit slip and delivers the cash, checks, and credit card vouchers to the local branch of the bank two blocks away from the market.

Required
Discuss the physical internal control weaknesses in the system.