This particular spray seems to work. Check out the clips of the coverage in the news:
http://www.phantomplate.com/photoblocker.htmlBut doesn't mean that it will work with non-USA plates since they may have different reflectiveness, nor does it mean it will work with other type of flashes that are from that company that supplies for the US for the red-lights, such as the ones used in other countries or other type of speed enforcement decices' flash used in US. All we know is that is seems to work for rel-light cameras in US plates. Not a big help IMO.
So its cheap to try and can't hurt (unless its specifically ilegal to apply any type of spry on the plates in your country) but I wouldn't trust blindly that it will work well, and its hard to test if it does work for you without running the risk not working and getting fined
you can use it but its not a substitute for a radar detector, etc.
I actually have a can of that stuff laying around somewere but I haven't gotten to trying it on the motorbike, since I its tougher to use radar detectors and laser jammers in the bike, I though maybe this would help just in case or that its better than nothing, but I'm not confident either way. I will know if I ever get flashed speeding
Bounces off radar and stuff like that.
