Supposedly the anpr camera's can be tricked, into thinking a car has entered to LEZ zone, when in fact it hasnt
Think this was done in Eng in a LEZ zone, so someone got a reg-plate, and place it on his back, and then walking in front of the anpr camera, and in a few weeks he got a ticket. Ticket was repealed a few weeks later, but this shows you, the system might be fallible