“This is the grave of Francis Wilson who died on the 15th July 1880. She/He was buried as a witch - facing the opposite way and just outside the burial ground. Such an amazing cemetery at Mt Morgan.” Flikr
There’s a Kinect camera watching the demonstrator, tracking his movements, when are then transferred to a computer, which sends to an array of pillars, which move up and down accordingly using actuators.
You can use it to transfer the actual movements of your hands, so you could remotely handle objects, like in the first 2 gifs, or you can use it for 3-D modelling like in the other two, like how he uses gestures to pull a cube of the table.
Basically it’s the crazy map from the first X-Men, or the first generation of Fitz and Simmons holotable in Agents of SHIELD. Imagine what you could with this, remote handling of hazardous materials, actually 3-D movies, conference calls that could actually project what you’re doing.