A Wifi Jammer is designed to block wireless land networks and bluetooth [...]

Portable Video Breaker/Jammer 900mW utilizes unique and intelligent [...]

This handy, pocket-size mobile transmission detector can sense the presence of an activated mobile [...]

Outdoor Wi-Fi 11a.b.g Jammer device camouflage looks like the panel antenna or WiFi outdoor device. Wifi 11a.b.g jammers transmits power radio signals to cut off communications between PC or cellular phone and base stations without interfering with any communication.

Features and Specifications

Tx Frequency: 2.4~2.5GHz, 5.1~5.9GHz

Cover interface standards: 802.11 a/b/g

Total output power:EIRP 8W

Patch antenna Gain 6dBi of [...]

Mobile Bug Detector This handy, pocket-size mobile transmission detector can sense the presence of an activated mobile phone from a distance of one and a half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. It is also useful for detecting the use of mobile phone [...]

Jammers were originally implemented by law enforcement agencies. The prime reason: They wanted to crack down any suspicious communication. The targets were the terrorist. The modern technology enabled terrorist attacks have seen higher usage of cell phones as a device to trigger bomb explosions.

Currently jammers are banned in US and are only used by federal law enforcement officials.   State prisons, California and jammers manufacturers are urging it be used in prisons. This might take out the technology in mainstream.

For as little as $400 you can annoy thousands of people around you. This particular device can jam WiFi and bluetooth signals. The gadget is expected to be released very soon.

A few days before the visit in November 2003 of the United States President, George Bush, to the United Kingdom, the British press speculated to no end about the extraordinary security measures that would be taken to protect the visiting president against possible terrorist attacks.
In addition to fretting about such routine measures as street [...]

Jammers can be used to address safety issues. In many jurisdictions, fire code regulations require that mobile phones must be switched “off” in any area that has a potentially explosive atmosphere.  This includes gas stations, where sparks could cause an explosion or fire. These preventable accidents occur more frequently than most people are aware.
Areas where [...]