Mobile phone jammers are widely used

There are many reasons for which a cell phone signal jammer can be used. Some of them can be used legally thanks to a permit from the local authorities Cellphone jammers are typically used in places where for either purposes of security or forced mobile silence – mobile signals are jammed preventing them from ringing.

Mobile phone jammer is an instrument used to prevent cellular phones from receiving signals from base stations. When used, the jammer effectively disables cellular phones. These devices can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected.

When a cell phone jammer is active, most cell phones show no network signal, and when the cell phone gsm jammer is switched off, the cell phone becomes active. Cell phones use unique frequencies for talking and listening. Most cell phone jammers block either of the two frequencies, indirectly providing the effect of prevention of both. Cell phone jammers work on the same principles as that of jammers used in preventing radio communication. They either function by disrupting the cell-phone-to-base-station frequencies or base-station-to-cell-phone frequencies.

Cell phone jammers are used by law enforcement and military to limit and disrupt communications during various situations. Certain organizations use cell phone jammers to prevent corporate espionage by blocking communication within sensitive areas. Portable cell phone jammers are also used by some people to prevent others from using cell phones in their immediate vicinity.

Can anything stop drivers from talking on their phones? A new jammer made by Indian engineers could take the decision out of drivers’ hands by disabling their phones while allowing passengers to keep talking or texting.

The system uses radio-frequency identification (RFID) technology to track whether a driver tries to use his or her phone with the car in motion, according to Smithsonian Magazine . That triggers the jammer to stop the driver’s phone — a more effective measure than smartphone apps that must be installed on culprits’ phones.