RFID

Radio Frequency Identification. That's the technology that StarKnight uses in their Security Guard Tour Systems. Simply put, it's a small electronic device that you can place on walls, in certain objects, underwater, etc. that get scanned to acknowledge that the area has been patrolled. Sounds easy, that's because it is! RFID's can be hidden in discrete locations, and be kept hidden from sight. Even when it's hidden it can still be scanned!