Telecommunications devices, including cell phones, satellite radio or Voice over IP, connect us to one another and to the world of information at our fingertips. Learn all about the technologies we depend upon for efficient communication.
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Who hasn't fantasized about throwing someone's cell phone out the window after unwillingly hearing way too much of his or her conversation? Cell-phone jammers silence these yappers and all other calls, obnoxious or otherwise, in a given area. But are they legal?

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