To address such a problem that patterns of game tokens (chips) in a game table are complicated and it is difficult for an
image analysis technique to determine whether or not a dealer accurately pays off chips corresponding to bet chips and prevention of a mistake is not sufficient.SOLUTION: A detection
system according to the present invention includes control device 9 that detects a fraud executed on a game table 1 using an
image analysis result by an
image analysis apparatus 6. A game token for use in the present detection
system has a multilayer structure formed by superposing plastic
layers with a plurality of different colors, including a
colored layer 101 at least at an intermediate part, and superposing white
layers 102 or light-
colored layers (not shown, however, it may be a light-
colored layer having a lighter color than that of the colored layer 101) on both sides of the intermediate colored layer 101. Accordingly, the game token has the colored layer 101 and has the multilayer structure formed by superposing the white layers 102 or light-colored layers (not shown, however, it may be the light-colored layer having the lighter color than that of the colored layer 101) on both sides of the intermediate colored layer 101.SELECTED DRAWING: Figure 3