The marks on the back of Mahjong or Domino or Paigow tiles are not very easy for the contact lenses reading. Therefore, we have developed a better cheating device for those games cheat. That is the belt camera to read the marks.
 

This kind of marks are specially designed for the belt camera reading. Our naked eyes and the contact lenses can not read them. Thus, it is very secret for your gambling.
 

There is no doubt that a camera has been fixed in the belt. The camera can read marks clearly and then send the results to the TV or your phone, so you can know what specific tiles are.
 

The short distance for the belt camera to read the tiles is 20-40cm and the long distance can be 1.5m. This is a powerful cheating device for you to win the Mahjong, Domino and Paigow. Just contact us if you interest it.