Spy camera, also called pinhole camera, is widely used in casino as a cheating device to read the back marked cards. The camera is always fixed on the ceiling of the casino or in the light, or smoke sensor etc. It can read marked cards and no need you wear contact lenses. The cards for camera can not be seen by contact lenses or naked eyes. There are many kinds of camera exist. Such as IR camera, Black filter camera and white filter camera also with laser camera. All the camera with their own cards. Take laser camera for example, the cards for laser camera can not be checked with any other camera. So it is the most safe camera and cards set.
This camera can help you to cheat at many poker game, such as Texas hold'em, Omaha hold'em, Blackjack, Mahjong, Domino and many other local poker game all over the world. Widely used and very useful device.