The result is you learn to adjust your shot as you receive the feedback. In this case, the magic numbers are: 45 degrees (the angle of your shot) and 11 inches (from the centre of the hoop).
I tried the system out myself and here's what I found out:
I'm a very decent free throw shooter capable of hitting between 80 - 85% of my attempts. My shot angle is 46 degrees and my distance is 10 inches...a rating of Expert 2 in the rating scale, which is equivalent to a US college player (not bad if I say so myself).
Step back to the 3-point area, I find (and I never realized it) that my shot flattens down to 42 degrees with a distance of 10 inches. As a result, my percentage drops to less than 50 and my rating is that of a Maker 4, a decent HS player (not bad but not good either).
Here 's the interesting thing, on the 3-point line, I hit 2 of my first 12 shots (each shooting session is 25 attempts) then after some adjustment to my shooting angle, I proceed to hit 10 of the next 13.
My only wish was that this was available when I was in my 20's. I have no doubt that this would have helped my extend my range a lot earlier on and be more effective shooting jumpers.
As I mentioned the service is available in the Toronto area. Check it out and make an appointment. It's just in time for basketball season.