>From: "[email protected]" <[email protected]>>Here's another one,
>http://www.nauto.com, which I mention as the
>recording of license plates and everything else in the surround,
Nearly 20 years ago, I first heard of "3M Louvered film", thin plastic sheets
with opaque black plastic molded perpendicularly to the plane of the sheet. It
would be very useful to help block the viewing of license plates from the side
of the road, or above on poles or overpasses. Google-search '3M louvered
film". http://www.apioptics.com/pdf/3M-Display-Film-Summary.pdf
http://www.freepatentsonline.com/3919559.html
http://www.freepatentsonline.com/EP0466460A2.html Two sheets installed
perpendicularly to each other would render a license plate readable only from a
limited viewing cone behind, or in front of, the car. Jim Bell
