Susie Swift, waiter at the Soda Shop, has been taking cash from the restaurant. Swift prepares a customer's check from which the customer pays. Swift then destroys the check, and prepares a new one with different items of lower cost. Shee presents the new check and indicated amount on the check to the cashier, and saves the excess cash for herself.
Question: Formulate three internal control features that the restaurant could implement, to eliminate this defalcation.