The world may never know if there are or aren't cell-phone bomb jammers out there, but DefenseTech has stumbled on a patent that may shed light on the ...

Cell Phone Jammers Keep Peace. October 19, 2004 / 5:27 PM EDT / AP It was the reporters who noticed first. Unable to call their editors while covering the weddings of the rich and famous, they ...

Jammers are relatively simple, as they simply rely on flooding the frequencies that cell phones use with electromagnetic noise, blocking any effective transmission within a limited radius.

Mislan, a former communications electronic warfare officer in the U.S. Army, said law enforcement has “very specific worries” about how cell-phone jammers could be used by criminals.

The FCC says that cell phone jammers can block 9-1-1 and other emergency calls from getting through. They cite two very scary, real-life examples of how use of a cellphone jammer could be a public ...

One jammer says: “I am not putting anyone in danger more than anyone on a subway with no cell reception is in danger.” Newsletters Games Share a News Tip Featured ...

Criminologist Joseph Giacalone explained why cell phone jammers are problematic. "They can interrupt 911 calls, they can interrupt police radios, transit radios," he said.

March 1, 2005 — -- We're all prisoners of technology, doomed for all eternity to a cell -- unless, of course, you have a cell phone jammer. If you burn with anger when you're subjected to the ...

Japanese scientists recently created building material that blocks cell phones from working. Would it ever be implemented in the United States? By Elisa Batista.

Unlike Larger Jammers, which can Cause Issues with Cell Service Outside of the Prison, Micro-Jammers Use a Short-Range Jamming Signal to Prevent a Prisoner’s Cell Phone from Working LOS ANGELES ...

Chicago man arrested for using cellphone jammer on train By New York Post Published March 13, 2016 6:28am EDT | Updated March 13, 2016 6:36am EDT ...