Some cool 3D scanning and tracking apps on iPhone!
I’ve found some very good apps; Face Cap, Face Scan and Patchy Scan 3D.
Face Scan especially, it does an excellent capture of my skin texture even in the free version.
Patchy Scan can be used, using capture with points, to create a mesh. You capture one area, then capture the next. So in the end you can create a digital version of a whole set.