Jinha Lee, a PhD student at MIT Media Lab and intern at Microsoft Applied Sciences, has developed a prototype for a transparent 3D desktop computer screen. The device lets a person arrange virtual objects with his or her hands by reaching into a projected 3D output space behind a transparent screen.The keyboard doubles as a trackpad and makes switching back and forth between 2D and 3D interactions easy – just by lifting your hands, a virtual desktop with a 3D grid appears. In addition, head motion is captured, making sure that the perspective is always correct when the person using the computer moves positions. The technology uses Kinect, Microsoft’s body-tracking camera for Xbox 360, in addition to a lot of pretty smart software.It's probably a while to before we'll see something similar on our own desktops, but the device shows how, with gadgets such as Kinect now being commonplace, that interaction design is becoming more gestural and intuitive.