Should cell phone jammers be installed in prisons?

Mobile phone jammers are also an essential device in prisons. Since 2005, authorities have confiscated more than 6,000 mobile phones in 55 prisons in North Carolina, a number that has steadily increased until 2012, when authorities installed equipment such as metal detectors and X-ray scanners. .. Authorities say the state has passed a law criminalizing the use of mobile phones by prisoners. This is a powerful deterrent. Mobile phone jammers are inexpensive devices that can block cell phone signals that are not permitted in some prisons, and signal jammers are effectively spread throughout prisons.

An effective jammer does not need to supply more power than the device that is jamming. Most portable jammers use CDMA technology. In other words, the operating frequency is basically the same and is synchronized with the base station. Various "codes" are transmitted in this frequency range so that the base station can decode them separately. However, if one rogue phone continues to generate garbage noise at CDMA frequencies instead of a carefully synchronized CDMA code, its direct signal will be overwhelmed.

Mobile phone jammers may be used in certain private areas. For example, Jammers have been installed in German prisons and juvenile training schools to interfere with or suppress nearby unauthorized radio frequency bands, thereby reducing drug trafficking and prison outbreaks. In August 2016, the device used for mobile phone interference was successfully tested in St. Pölten, Austria. The results show that the test can only prevent prisoners from connecting and does not interfere with outdoor mobile communications. According to statistics, Austrian prisons check about 60 to 70 mobile phones each month.