This is a little trick I discovered somewhere along the way. If you want to "blind the cameras" figure out a way to emit BRIGHT infered light around the plates, Shinning away from the plate. You can get IR leds, but you would need alot of them. To electronic equipment, IR is highly visible. You can see this when you take a video recorder and point your vcr remote at it. If you can make the light bright enough and shinnig OUT from the plate, the camera will just catch a bright blur instead of the numbers. This works really well, as for those of you that don't know, IR light is invisible to the human eye, so cops would never know.