>
> The law applies to plastic license plate covers, but I think the term is
> devices. If you get pulled over for something else and they notice your
> license plate has been tampered with, then they could ding you for that
too.
>
> This may be a scam anyway--maybe it's some spray on snake-oil thing. A
> better and cheaper alternative is just don't get speeding tickets.

Assuming the spray works . . . how would anybody (a cop or anybody else)
NOTICE that the license plate had been tampered with? -Dave