On Sun, 05 Oct 2014 20:49:49 +0100, alan_m wrote:

You don't need to. When you do the look up you check when and
where
the ANPR system last "saw" it. What you could do is analyse the
times
bewteen vehicles appearing on different cameras and build a
"knowledge base" of how long it would normally take to get from
one
camera to the ones within an area. Less than that time plus a
margin,
flag it as a possible clone.

But unless there is someone to physically stop the car what use is it to
detect the problem with a camera?

Next time it passes a Traffic Car with the ANPR active it gets
flagged up to the coppers inside as a possible clone. They can then
decide to put down their tea or not...

--
Cheers
Dave.