On Sat, 13 Nov 2004 23:06:29 GMT, "Matthew Maddock"
wrote:

Or you could simply fake a plate that looks like a real one - so how will
the "automatic detection" know if a car is there or not ?

Because the device reading the microchip will not detect its existence in
the plate. Simple - if it ain't there, then it is fake!

There is nothing to stop a person from replacing the transponder on a
numberplate with a different transponder. Plus a market for fake
transponders (they are not rocket-science). A switch in the car could
make the transponder act like a James Bond type revolving numberplate

--
Cynic