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A comment on Driver caught using cell phone jamming device. Parent comment

Re:Driver caught using cell phone jamming device by mahart on Wednesday April 30, 2014 @04:33PM (#7676207)
There are building materials that naturally block/reflect/absorb mobile frequencies which is perfectly legal.

That is different from transmitting a signal to jam which is highly illegal.

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Re:Driver caught using cell phone jamming device by dingaling on Thursday May 01, 2014 @01:43AM (#7678424)
One other trick is to advertise as a cell and accept connections, then just black-hole them.

Full signal strength but no calls.

Edit: may be illegal in your jurisdiction if you require a license to transmit on cell frequencies.

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