This invention was done by Free Flow, a team of five electrical and computer engineering seniors about to graduate from Northeastern University.

Notes about the 3D computer interface:

Utilizing the theory of electrostatics, we have designed a low-cost human-computer interface device that has the ability to track the position of a user’s hand in three dimensions. Physical contact is not required and the user does not need to hold a controller or attach markers to their body. To control the device, the user simply waves their hand above it in the air.

Link via Scene 360 Illusion