"This product makes it impossible for a video or still camera to take a legible photograph of your license plate number. However, your license plate still remains available for ordinary viewing by the police, other drivers, etc. Protects you from 360 degrees of photo-radar. Saves cash and your license!"

do they work? are they legal to own? i know this is mostly a cali board but if anyone knows the law about this in florida that would be great.