According to security officials with the Nevada State Gaming Control Board, around 500 people are arrested each year for attempting to cheat at casinos in the state of Nevada. Out of the total number of arrested, nearly a third of those arrests are casino employees.
Security experts stated that increased video technology and ultraviolet and infrared light are creating new opportunities for cheaters in the casinos. There have been cases where gamblers would wear infrared contact lenses in order for the wearer to see marked cards.
Source: Bethany Barnes, “Casino gaming cheats are increasingly sophisticated, panelists say,” Las Vegas Sun, May 22, 2014.