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There is a free iPhone app that I use with my laser training device. You set up your iPhone or iPad to "look" at the target you are shooting at. It uses the camera in the iPhone or iPad. It "sees" the location of the laser strike on the target and marks it. It then "scores" the hits. It is a great help in letting you know where your strike hit.

The app is called iTarget Pro. It is also available for Android I believe. There is a "system" you can purchase that comes with what they call a "sled" that holds the iPhone and target for you as well as a laser cartridge. I already had a tripod that holds the phone, so I just set the target on an old stand that my wife used to hold paperwork when she was typing. It holds the target, I point the camera at the target using the iPhone tripod, with the app running and then I can stand anywhere in the room, or even down the hall to do some indoor practice.