There will be brain magnetic pulse sensor in the brain. Which detects brain waves that could transmit data to any computer and controls it.
Basically, its a mind-controlled computer.
2. Window Visualiser.
A projector will project an image onto a "transformable opacity" window. It will turn opaque when projector light is shone and turn transparent again when the projector is off. That solves the hassle when you need to dim the room when a presentation is shone.