Playing around with the Kinect, I realize that it’s only a matter of time (and not that much time) before a 3D camera will be built into something like the iPad — although it might not be an iPad, but rather some roughly equivalent tablet by Samsung, Toshiba, HP, or whomever.
Such a 3D camera will be able to do far more than detect multiple finger touches. It will be able to see the entire position of your hands and your fingers — not just touches upon a surface but gestures in the air above your tablet, or perhaps over the tabletop in front of your tablet.
And when that happens, the laptop computer as we know it may no longer serve any purpose. After all, an input system that detects not just touches but the actual movement of your fingers in the air can be far more responsive than any mere mechanical keyboard. Such an input device could even correct errors by figuring out from your finger movement which key you had intended to type.
Tablets sporting 3D cameras might be just around the corner. And the days of the laptop computer may be numbered.