Desk occupancy monitoring
The Register covered OccupEye back in 2016...
I came across one of these devices when I was working for a customer location recently and crawled under the desk to secure a Kensington lock. Was not in the least surprised to see it there as the place was so full of control freakery in all the internal communications and directives being plastered across the place in noticeboards, come 4 and 5 PM, there were mass exits to the doors.
Posting as AC as I may well have to visit them again, but hopefully not.