[FooFighter]

Stumbled upon this:
http://www.buyradardetectors.com/Produc ... ector.aspx

Wonder if it works?

 

[lessonsinspeed]

There's quite a few of those on the market. Not sure if they work, but you can buy anything from a whole cover to a strip to a spray.

 

[DAP91Si]

I've seen one of those on a car in DC a while back and I couldn't see the numbers. I see now you can buy a spray that makes the license plate really glossy so the picture is over exposed. I wonder if a can of clear would work.