In recent years, Brier Model Prison has repeatedly attracted attention due to prisoners' illegal use of mobile phones for communication. signal jammer With the rapid development of smartphone technology, the 2G jammers currently used by the prison can no longer effectively prevent prisoners from communicating through 4G and 5G networks.cell phone jammer In order to meet this security challenge, the prison management decided to upgrade the existing system and introduce more advanced portable jamming equipment to improve signal blocking capabilities and ensure prison safety.GPS jammer

1. Outdated 2G jammers are difficult to block modern smartphones

　　Brier Prison management admitted that the jammers currently used in the prison can only block 2G signals, while most prisoners use devices that support 4G or even 5G networks. Wifi jammer This has resulted in the existing equipment being ineffective in preventing prisoners from communicating illegally. It is reported that during the 2022 surprise inspection, the prison seized multiple mobile phones and other electronic devices from multiple prisoners, including gang members. This series of events exposed the prison's shortcomings in signal blocking technology.

　　In recent years, smartphone technology has advanced rapidly, and 2G networks have gradually been eliminated, but the jammers in Brier Prison are still stuck in the old 2G era. This not only gives prisoners an opportunity to take advantage of the situation, but also seriously threatens the security and order of the prison. To this end, Deepak Purohit, the prison governor, proposed a new proposal to introduce portable jammers to focus on blocking 4G and 5G signals, especially in the barracks area where prisoners are active.

2. Advantages of new portable jammers

　　Compared with traditional 2G jammers, modern portable jammers are not only small and easy to deploy, but also have stronger signal blocking capabilities. These devices can accurately block signals in specific areas to prevent prisoners from using smartphones to commit crimes. In addition, the new jammers can also block instant messaging applications such as WhatsApp, further cutting off prisoners from the outside world.

　　Although Bharat Electronics Limited (BEL) had previously proposed to install new jamming equipment for prisons, it failed to materialize due to budget and other reasons. However, with the increasing problem of illegal mobile phone use, Brier Prison had to re-examine this proposal and decided to give priority to purchasing portable jammers to ensure that communications within the prison are fully controlled.

3. Illegal communications challenge prison management

　　The use of illegal mobile phones inside prisons is getting worse. For example, in August 2022, during a surprise inspection, prison guards seized a mobile phone from a prisoner named Arjun in Barrack 5. In July of the same year, hidden mobile phones and chargers were found under the floor of the bathroom in Barrack 4. In addition, a Bluetooth device was found under the floor of Barrack 8, all of which were used to communicate with the outside world.