I just saw this! Isn't it cool?
For those on Research Gate: https://www.researchgate.net/public...CCESS_TO_EDUCATION_AND_REDUCTION_IN_ISOLATION
I have seen these robots at convention centers, that is mostly parked at their chargers. Probably only seen one used once somewhere. I think little drones with 3d cameras will be the thing that really "takes off." You would wear your 3D goggles and pilot a drone around and observe.