...see demo WWDC Keynote 2018
Yes, this needs to happen.
What do you want exactly?
A dialog to pick a length by measuring something?
I have a client that measures things with two photos of objects in a special measuring booth with scales on all three axes.
This is used for shipping and packing data. ARKit measuring would speed this process up.
How it would work exactly is not a clear vision yet. Might depend on how the New ARKit tools return data. Maybe good if you could get back JSON for length of X,Y and Z.
Right, Maybe just a simple implementation similar to the way signature capture works. Dimension capture.
Retrieving data ...