Buckinghamshire CC ANPR cameras

James Firth james2 at jfirth.net
Tue Jan 10 11:47:32 GMT 2012

Roland Perry wrote:
> That's essentially the same as the 24-bit hash used by the Highways
> Agency, which while not unique to every vehicle is plenty good enough
> as
> evidence in a murder investigation.

Rather than give the entire feed to the police, surely it is possible to
obtain a compromise whereby certain hashes can be added to a "watch list".
Upon matching, the entire car index plate, location etc is revealed to the

Oversight will then consist of accurate reports by the council/HA etc of the
number of plates concurrently on the watch list each reporting period.

This at least prevents some enterprising police forces storing the raw feed

James Firth

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