With the development of technology, this technology used to be expensive, troublesome and limited to the transfer of mobile phone jammers to the GSM 900 MHz band, so it became smaller and cheaper. Regarding interference bands, not only can they block mobile phone signals (GSM 3G 4G UMTS LTE, etc.), but positioning systems and WLAN data networks (GPS, RLAN, WiMax, Galileo, etc.) are becoming more and more widespread.
In some areas of the European Union, the illegal use of cell phone jammers is prohibited. In the past, these devices have been used to block cell phone calls from trains, theaters, or movie theaters. Today, many illegal elements use mobile phone signals to interfere with criminal activities, because it not only causes inconvenience to mobile phone users, but also prevents emergency calls as much as possible, such as fire departments, police or ambulances. The thief had a car or truck that transported valuable goods at the location of the handicapped vehicle.
With the development of GPS tracking systems, more and more GPS tracker users have more and more diversified styles. Due to their compact design and low price, it is difficult to find with the naked eye. Many criminals use it to track others due to their height. Security risks, people with monitoring problems can use powerful gps jammer to stop GPS tracking.
Fleet management is increasingly using telematics systems, which make the daily workflow more data-oriented, including GPS positioning. Fleet managers use GPS trackers to monitor the presence of employees in vehicles, display their location at any time and accurately record all driving routes. At this time, it is best not to damage the GPS, because it will bring great difficulties to vehicle monitoring.
Under special circumstances, such as the approval of prisons, authorities or OFCOM, cell phone jammers can be used. FMG clearly stipulates that criminals use mobile phones to organize criminal activities, such as using mobile phones in prisons to interfere with drugs for drug trafficking, prison breaks and other crimes. Therefore, criminals and law enforcement agencies can use signal tracking systems to prevent mobile phone calls in their areas. This can completely avoid this situation.