A quick answer to the "Cell Phones in Prisons" problem

Posted: under Technology.

Much has been made lately about inmates in Texas prisons having smuggled cellphones. It all came to light late last year when condemned killer Richard Lee Tabler used a smuggled cell phone to call and threaten state Senator John Whitmire.

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I’m surprised I haven’t seen what I consider to be a pretty obvious solution to the problem proposed. Now, I may be missing something, but here goes my proposal:

The government already has the ability and the capacity to tap in to cell phone conversations, including any data transmisisons.  It’s called CALEA.  The problem with doing that, according to news reports, is that law enforcement has a hard time tracking “pre-paid” cell phones until an inmate is discovered with one, then they go back to try and find its source.

I have a better solution: Don’t track the phone. Track the location.

Pay (yes, pay) cell phone providers to install small Base Transceiver Stations (BTS) around the prisons, effectively creating micro-cells in the prison.  Each BTS shares a Location Area Code (LAC), and has a unique Cell ID (CID).  Now, all you have to do is monitor, through CALEA, incoming and outgoing calls and data that originate and end through those CIDs. So you don’t have to chase down random phones bought in Atlanta. The phone will come to you. All you need to know is which CIDs to monitor, and since you’ve forced the cell phone to YOUR Cell IDs, they’re easy to monitor.

Now, I may have missed a few things here, since this is just a “back of the napkin” plan, but I think it’s doable.

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Written by Jean Valjean

Comments (0) Feb 17 2009