Within the European Union, cell phone jammers can already be used in the UK, France, Sweden, Poland and the Czech Republic. The Swiss Federal Office of Communications (OFCOM) also stated that it generally approves the use of mobile phone blockers. The principal of the school publicly used a mobile cell phone jammer and was not guilty. On our website, there are news videos from CNN. Usually, the blocking program is in the staff room and is only closed during breaks so that students can continue to rely on their phones in the future.
The prison service department has installed mobile phone jammers in prisons, but they cannot work on 4G networks. 4G networks are mainly used for voice calls on the Internet to constitute crimes, and institutions cannot intercept them. Criminal gangs and fool gangs can use their phones for free. In the past year, more than 100 mobile phones have been recovered from state prisons. The prisoner uploaded a WhatsApp video to celebrate the birthday of a triad member in Amritsar prison, while another triad member appeared on Facebook in real time from another prison.
It turns out that mobile jammers are more useful than other methods (such as handheld and metal frame detectors) and can prevent the use of mobile phones in prisons. In addition, although most prisons are equipped with jammers, some of them are outdated and outdated, while others are not functioning properly. In addition, mobile phone jammers currently cannot cover the entire premises of most central prisons. The prison authorities plan to install a breakwater in the barracks that house notorious criminals.