A security system for use in gaming comprises, in combination, a gaming table, and a plurality of light-sensitive detectors arranged in a pattern on the gaming table. A plurality of indicating lights is provided equal in number and electrically coupled to the plurality of light-sensitive detectors. Interruption of light otherwise passing into any one of the plurality of light-sensitive detectors causes illumination of its own corresponding indicating light to cease during the interruption of light, and the illumination to return once the interruption of light terminates. Each detector of the plurality of light-sensitive detectors comprises a Cadmium Cell detector. An alternative embodiment of the system incorporates fiber-optic cables in lieu of the Cadmium Cell detectors and their associated indicating lights.