Just seen these posts ,at our rifle club lanight a newer member had an app for Ipad and Iphone, on shooting his targets he just placed them verticaly on our monitor screen , took out his Iphone ,the same as taking a picture veiwed the shot target , the phone adjusted the rings on the phone to suit the target, and instantly the target was scored, it also logs each target ,give you your averages and thermaly gives your hottest score? each shot is shown on the target in great detail and records each target to be viewed later, it was quite an eye opener next visit I will try and find out what it is, and post an update unless you know already what it is.