metoikos writes "A company based in Fairfax, Virginia, has come up with a subtler method of preventing cell-phone addicts from using the world as a phone booth than a faraday cage or even those little hand-held jammers. Cell Block Technologies (that name must go over well with law enforcement) is developing a smoke-detector sized device which sends signals of 'no service' to cellphone frequencies, prompting phone to send calls directly to voicemail. Admittedly this is better than messing with everything that uses the same frequencies cellphones do . "
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