Quote Originally Posted by skimask View Post
I think I smell what you're cooking. I saw it on one of those shows talking about Ford Motor Company's assemblies processes.
Yep... probably the same system. The approach that Skimask suggests would do the trick. If you stagger the frequency to say every other emitter/reciever pair that are next to each other, you effectively reduce the possibility of picking up a stray signal from an adjacent pair. The other thing is to look into some kind of filter lens or plastic that will filter out stray IR similar to what you see on you VCR/DVD IR receiver.