Assume a client who owns a small apartment complex in a different city than where he lives has discovered that the apartment manager has been skimming rental receipts, which are usually paid by check. The manager endorsed the checks with the apartment rental stamp, then endorsed her own name and deposited the proceeds into her own checking account. Because of the size of the operation, hiring a separate employee to keep the books is not practical. How could a scheme like this be prevented in the future?