As casino technology gets better and better, so too does the technology that cheaters use. Small video cameras have been employed to run all kinds of cheating gambits, so now casinos are taking things a step further into the realm of counter-surveillance. Video cameras release a specific high-pitched frequency when they’re used, so some casinos are now installing counter-surveillance scanners, sensitive machines that can pick up on that frequency and report it to the monitoring room. Considering the sheer number of cameras already operating on the gambling floor, these machines would need to be incredibly sensitive to pick up one more, but the cost of letting a deck of cards be photographed before it’s dealt can be in the millions.
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