4G Cell Phone Jamming For Prisons

      Not only have a bunch of prison wardens filed a Petition for Rule-making at the FCC, but they are backing a bill that would require the FCC to authorize 4g cell phone jamming in prison.

     You can find general background on CellAntenna, their quest to monetize security breaches in prisons, and why this is a bad idea in my Wetmachine post. Also, in preparation for tomorrow's Senate Hearing on the issue, we have sent this letter (press release here) to Chairman Rockefeller and Ranking Member Hutchison. We've also put up another Five Minutes With Harold  Feld giving the short version of why this is a really bad idea. But to run through a few headlines: http://www.4gcellphonejammers.com/

    1) It won't work. As this Wired article notes, you can beat the jamming with a few pieces of aluminum foil. That doesn't even consider the human element that prison personnel compromised enough to smuggle in cell phones can also diddle the jamming system.

    2) On the other hand, as noted by frequency coordination managers, public safety orgs, and commercial licensees like CTIA, this is very likely to screw up legal wireless communication. I will note that while CellAntenna is real big on applying for permission to do flashy demos under controlled circumstances, they don't seem terribly eager to submit any actual engineering data to back up their claims that they can jam contraband cell phones in prison areas without interfering with (a) authorized phones used by guards, (b) neighboring public safety frequencies, or (c) anyone outside the prison.

    3) OTOH, while this probably won't do squat to solve the problem of contraband cell phone use, it almost certainly will make it a heck of a lot easier to get cell phone jammers in the U.S. Which has the potential to create real problems for commercial and public safety communications generally.

     4) If we really want to address the problem, we need to do better than fake security from expensive new gadgets that won't work. 4G Cell phone Jammer  network operators can work with prisons to block all but explicitly authorized phones (called "white listing") or can monitor cell traffic that originates in prisons that comes from unauthorized sources. We can also reduce the outrageous cost of collect calls from prisoners to their families. 

     As Beiser's Wired article notes, most prisoners use contraband cell phones to stay in touch with their families because they cannot afford the high rates of prison calls. This makes renting cell phones to prisoners extremely lucrative. Reduce the profit from renting contraband cell phones and you reduce (although do not eliminate) the incentive to bring in cell phones.http://www.4gcellphonejammers.com/