Abstract: A computer-implemented method and computer program for use with a cash register that tracks individual transaction data by employee to help identify unusual patterns that are indicative of employee theft. The computer program allows the tracking of certain transaction data by individual employee and comparison of that data to other employees and/or the same employee time shifts from different days. By tracking and comparing relevant transaction data, unusual or suspicious patterns of activity can be identified and thereafter investigated by the employer to determine whether dishonest activities are occurring. The program also maintains a cash inventory, records denominations tendered in payment for goods or services, and indicates the exact denominations to tender as change.