Cool picture of a virtual keyboard. The article talks about a purely optical keyboard. You move your fingers, and the “keyboard” detects what you’re typing. Now, if optics are that advanced, they should be able to figure out what I’m writing and put that on the computer. So I won’t need a digital pad – I’ll just write on paper. Or even better, project the screen! Then I’ll just carry a little 1" x 1" x 1" box that’ll project a virtual screen that I can draw / write on.