This is a good idea, however I'm disappointed at the accuracy of ARKIT, I doubt if this will be useful. As soon as I saw people built ruler demos with ARKIT, I

This is a good idea, however I'm disappointed at the accuracy of ARKIT, I doubt if this will be useful. As soon as I saw people built ruler demos with ARKIT, I tried it myself. but it is very inaccurate. I was amazed how other people could make it so accurate in the demo video. I just downloaded two of the ruler apps previously demoed with videos in the summer. They are as horrible as the one I made ... not sure if I need dual camera phones to achieve accuracy. I'm using iphone 7.