One input method that a colleague discussed with me recently was in using a webcam to determine where keyboard input should go. The computer would track your ey

One input method that a colleague discussed with me recently was in using a webcam to determine where keyboard input should go. The computer would track your eyes and where your focus went, and then make the application you're looking at have focus. So that it wouldn't matter where your mouse was, but when you typed the application you're looking at would get the input.