I came across information about a small new 3D scanner that can be used with an iPad (attaches directly to the iPad) called iSense from 3D Systems (they apparently invented 3D printing), displayed at CES . My understanding is that it can do up to a 6 ft by 6 ft object, but can also scan a room, etc. To capture, you can just walk around the object or scene. It contains 2 cameras, one for structure, another for colour. The first model looks like an electric stapler and is tethered to a Windows PC. This new one clips onto the iPad.
I didn’t find the right solution from the Internet.