Some day, in the distant future, we'll be activating windows, clicking buttons, and playing Farmville with our minds. Our minds. There have been attempts to get us there, none fully comprehensive, though the Evigroup Paddle Pro tablet is taking an interesting alternative approach: using head tracking to control the cursor. Apparently its front-facing webcam detects your front-facing mug and as you look about the screen it moves the cursor appropriately. Staring rudely at any button or control for a half-second equates to a
