[tw04]

WHY? There's a reason we have the keyboard, and it wasn't a limitation of technology. The reason the "typewriter" interface was carried over to the PC is because it's GOOD. This is almost as bad as when MS decided Kinect would replace all game controllers because look hands free. It turns out we have hands for a reason. The speed and precision we can do things with our hands far exceeds basically anything else beyond a direct link to your brain.

Have you ever watched someone who is handicapped who has eye tracking for a keyboard? Have you paid attention to how slow and error prone it is? What on earth makes you want to have THAT as your primary input method???