There is an example of introducing a mobile phone jammer in the lobby. During the playback process, someone’s cell phone keeps ringing. Even if you receive a notification of “Please turn off your phone before the show starts”, this phenomenon will not decrease. This is why I used an anti-harassment device in the hall to avoid inconvenience to other people. This device is a device that intentionally removes radio waves from mobile phones in the area. Since the mobile phone radio control device emits stronger radio waves with the same frequency as the mobile phone base station, the mobile phone receives the radio waves from the 3G/4G mobile cell phone jammer, assuming it is the radio wave from the base station.
Recently, many people use smart phones. Many people have the right to freedom of communication. Freedom of communication means that people have the right to freely use communication methods such as letters, telegrams, and telephones. However, there are abuses of this right. I encountered a cheating problem on my mobile phone during a recent exam. There are also phenomena such as using mobile phones to conduct wire transfer fraud in financial institutions. In many halls, it is common for cellphones to ring to interfere with viewing. In order to prevent the inconvenience caused by smart phone ringtones, it is necessary to promote public welfare, such as ensuring the quietness of specific spaces. We allow the installation and operation of mobile phone jammers.