Posted: 6/8/11 at 8:33pm
Using cell phone jammers is illegal in the United States because the radio frequencies used by the cellphone carriers are protected by the FCC, just like those used by television and radio broadcasters.
It has also been said that the jammers can interfere with medical equipment (pacemakers for example). There's also the argument that bad guys could use them during a crime to make it impossible for a victim to use their cell phone to call for help. (I don't buy that argument. A bad guy is going to get one no matter what the law says.)
I wish the FCC would let theatres get around this law by simply requiring them to post warning signs that say, "Be advised that once you enter this theatre you will not be able to initiate or receive any transmissions on your cell phone or electronic device. Electronic signal jammers are in use."
I also wonder if cell phone signals could interfere with the technology associated with automated scenery? Seems like a good argument for the theatre industry (especially Broadway) would be to say that they can't allow the use of cell phones in the theatre because it puts the actors and stage hands in danger.
Some businesses have taken a different approach. During construction or renovation they install steel mesh on their walls, floors, and ceiling surfaces. The mesh is then covered over with regular building materials and carpeting. No signal comes in or goes out. Problem solved. (Not sure about the legality of that though...they are still actively actively blocking signals.)
I wish jammers were legal. I'd buy one of these and keep it in my pocket and turn it on when I go to the theatre, sit near an incessant talker on the train or while at a fine restaurant.
Portable Cigarette Case Cell Phone Signal Jammer
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