How do you distinguish between ones that don't match because they're invalid or ones that don't match because the algorithm didn't properly process the image?
It seems like you could cause some real confusion if you lived near one of these cameras by putting a screen in your window that cycled through random plates. Especially if you run your own ALPR on the street and only use plates that have passed by before.
I wonder what the rules are about displaying license plates on your car. No doubt you're required to display the one issued to the vehicle, but what happens if you also cover the car in pictures of different ones?
