Close range Room mapping, I actually bought an iPhone simply because they are cheaper than the similar units that were available at the time.

Units that had no hardware other than the lidar, not even computation to parse the inputs, they were thousands of dollars.(I haven't looked recently)

Anyway I bought just the apple unit as they were obscenely cheap when just the replacement part, but for the life of me I could not reverse engineer any usable data from the device

I ended up embedding an entire iPhone into the robot I was working on. It was literally thousands cheaper than buying one otherwise