Jammers can effectively break communication between prisoners in prison

The jammer itself is typically a small, self-contained frequency transmitter that can send an interference signal within a five to ten meter range. The devices typically plug into a cigarette lighter or USB/charging port and require a low amount of power. Although illegal in most places, GPS jammers can be purchased online and come in various types, such as Wi-Fi jammers, Bluetooth jammers, remote control jammers or drone jammers.

As the number of mobile users increases, mobile phones need to be disabled in certain places, and their ringtones will be disruptive. These include places of worship, lecture rooms, hospitals, concert halls, meeting rooms, prisons, etc. cell phone jammer are very effective in classified conference rooms where important information can be leaked from one room to the outside without knowing anyone else. Signal blockers can be very effective in breaking communication between prisoners in prisons. Wardens no longer have to worry about cell phone inmates.

Both the expensive made for military IXI Dronekiller SDR gun, and the LimeSDR Dronesense work in a similar way. They begin by initially using their scanning feature to detect and find potential drone signals. If a drone signal is detected, it will emit a cell phone jammer signal on that particular frequency, resulting in the drone entering a fail-safe mode and either returning to base or immediately landing. Specifically targeting the drone’s frequency should help make the jammers compliant with radio regulations as they won’t jam other legitimate users at the same time. We note that this method might not stop drones using custom RF communications, or fully autonomous drones.

Almost a decade after it began modernising its ill-equipped police force, Himachal Pradesh got first vehicle-mounted jammer, at a cost of ₹1.88 crore. The police have also purchased two potable jammers, costing ₹50 lakh each.They have deployed Pantsir S1 missile systems to Khmeimim airbase near Latakia to protected Su-57 fighters positioned there. The Pantsir combines short and medium range anti-air missiles on an integrated vehicle platform. At Khmeimim, the Russians have also setup a powerful GPS jammer whose effects can sometimes be felt as far away as Tel Aviv

In Mexico, the main clients have been banks looking to stop would-be robbers from communicating with their accomplices and the Mexican government, which is planning to use them at prisons, Haim said.Perfectjammer makes counter-drone devices, including multi-sensor detection systems and drone deterrents, such as its DroneGun MKIII. This pistol-shaped,  jammerweighs under 2 kg and is an alternative to the company’s other DroneGun Tactical unit. The device can be body-worn and used in conjunction with Perfectjammer stationary, multi-sensor detection system.