Buckinghamshire CC ANPR cameras

[Brian Morrison]

On Wed, 11 Jan 2012 08:27:02 +0000
Mark Lomas <ukcrypto at absent-minded.com> wrote:

> I remember a police officer explaining the investigation of a kidnapping.
> The kidnappers used a PAYG phone that was only switched on while making
> ransom calls, never used to call any other phones, and taken to a new
> location each time it was used. Consequently neither an intercept nor
> traffic analysis would reveal information the police didn't already have.
> 
> Instead the police took the lists of all other phones in the same cells at
> the times of the calls (the data James mentioned) and looked for phones
> that were nearby on more than one occasion.

So the disciplined kidnapper needs to ensure that any personal phones
are switched off and that they have a number of other PAYG phones to
use for other calls which they dispose of carefully after use and
have only topped up with cash at places without CCTV.

-- 

Brian Morrison

bdm at fenrir dot org dot uk

   "Arguing with an engineer is like wrestling with a pig in the mud;
    after a while you realize you are muddy and the pig is enjoying it."
    
GnuPG key ID DE32E5C5 - http://wwwkeys.uk.pgp.net/pgpnet/wwwkeys.html
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