Keep the store neat and orderly. Use mirrors to eliminate blind spots in corners or behind displays. Keep merchandise away from store exits to prevent grab and run situations.
Keep the displays full so that employees can see at a glance if something is missing. Lock expensive merchandise in cases with a limit on the number of items removed at any one time.
Design the store lay out so that customers must pass the cash register and store employees to exit. Never leave the register unlocked or unattended.
Monitor dressing rooms and restrooms at all times. Limit the numbers of items that can be taken into a dressing room and make it clear that no merchandise can be taken into the restroom.