A portable cell jammer is a device that interferes with a cell phone's signal. It can also interfere with other signals, such as GPS and Bluetooth signals. It can be installed indoors or in cars, and it can block the signals from different types of cell phones. The latest models are portable and designed to block up to 12 frequencies at once.

 

The jamming range varies with the power level and the surroundings where the signal is coming from. A low-power jammer may only block calls from 30 feet (9 m), but a higher-powered device will block signals up to one mile away. The jamming devices are about the size of a cell phone and can be switched on and off. For best results, place them in an area that is free of distracting gadgets, such as cell phones, to avoid accidentally switching on the device.

 

While most people think of cell phone jammers as a security tool, they are also used for legal purposes. For example, technicians can use them in the workplace to ensure that their equipment is functioning properly without involving the police. They can also be used in theaters, auditoriums, and schools. There are even prison cell phone jammers, which are specifically designed for prisons. Unlike a police jammer, a prison cell phone jammer will only affect signals coming from within the prison.

 

A portable cell jammer on this link works as a small independent base station. It interferes with the operation of local cell phones, primarily in the receiving mode. If a nearby cell phone enters its range, the jammer will intelligently choose to block it instead of sending out a signal. This prevents cell phones from being able to call out.

 

Another practical use for a portable cell jammer is in preventing the use of GPS for law enforcement and tracking. GPS-based tracking devices and mobile gadgets often use three nearby cell phone towers to calculate coordinates. While GPS may be a great way to keep track of a missing person, GPS jammers will prevent this.

 

The portable cell jammer works by deliberately disrupting communications between cell phones and the base stations of cell towers. This device is very effective in keeping kids from talking on their cell phones, and can be very helpful in the home as well. However, it is illegal to use a mobile phone jammer in many jurisdictions.

 

Despite their popularity, cell phone signal jammers are not legal in India. They are illegal in the United States and many other countries, mainly due to the concerns about public safety. In some cases, it is even illegal to possess a portable cell jammer, and a conviction could result in imprisonment. View here and discover more about jammers. 

 

The problem with this technology is that it is easier to hack a cell phone than a computer. It contains personal information, including passwords, and even pictures of family and pets. Even celebrities have their phones hacked. Continue here https://simple.wikipedia.org/wiki/Radar_jamming to get a general overview on the topic.