Pretty cool, But It does need to be wireless. why couldn't they put a little battery in it?
I am sticking with my single dot on my hat brim. I got it working fine.
Nice review Dave
what is the pro clip? an LED?
I had the same problem with the single dot. I found the the angle of the reflective dot was to great at the far sides for the TIR to pick up. so I just moved the Track IR endpoints in so it was max sooner.