[simonbarker87]

Yeah, my guess is some kind of LIDAR type device and perhaps a mix of a couple of other things. A researcher friend of mine was musing over possible uses of LIDAR a couple of years ago and this was one of his end uses if my memory is correct.

I could of course be wrong, so if someone knows different

[peterhajas]

I thought LIDAR was prohibitively expensive technology for use in consumer applications, but I could be wrong. I remember reading about it when Radiohead did their "House of Cards" music video with LIDAR tech.