The Use of Signal Jammers in Chess Rooms: Ensuring Fair Play

In recent years, it has come to light that some owners of chess rooms have installed signal jammers within their establishments. This raises the question: why would they resort to such measures? It turns out that these owners have their reasons, and it is not solely to block cellphone signals. The signal jammers are primarily aimed at preventing individuals with malicious intent from using wireless remote controllers to secretly manipulate automatic mahjong machines, thereby altering the dealing and outcome of the game.

The Issue at Hand:

Once an automatic mahjong machine has been tampered with by installing cheating devices, these individuals can control the course of the game and the results of each round using concealed remote controllers. They can then gain undue advantages, which is undoubtedly an unethical behavior. Chess room owners often find themselves in a difficult position when faced with such situations. They are hesitant to confront the issue directly, and therefore, resort to the use of signal jammers to render the remote controllers ineffective. This ensures the maintenance of a relatively fair gaming environment.

The Functionality of Signal Jammers:

In this particular scenario, signal jammers are typically installed to block the frequency bands commonly used by remote controllers. Chess room owners only need to target a few specific frequency bands to effectively block the signals. The commonly used communication frequencies for remote controllers include 433MHz, WiFi 2.4G, WiFi 5.8G, and others.


The installation of signal jammers in chess rooms may seem surprising at first, but it serves a crucial purpose. By preventing the manipulation of automatic mahjong machines through the use of wireless remote controllers, chess room owners can uphold a fair gaming experience for all players. While it may not be an ideal solution, it is a necessary measure to combat cheating and maintain the integrity of the game.