There is a plenty of solutions like this already. The earliest I am aware of was a specialized mini "cart" studded with video cameras that one would roll aroun

There is a plenty of solutions like this already. The earliest I am aware of was a specialized mini "cart" studded with video cameras that one would roll around the place and will get a textured 3D model that can then be walked around, Doom-style. It was made by a Vancouver startup was back in mid '00s. There is also a specialized handheld "scanner" gadget that was marketed towards police use for capturing crime scene details. You'd just wave it around and see the resulting 3D phtogrammetry capture in real-time. Missed a bit - go back a wave a bit more. This was in the early '10s. I'd imagine that this has been ported to smartphones already, because they now have sufficient sensor, storage and processing capacity for that.