Manu Kumar, a researcher at Stanford university, has come up with an alternative to using a mouse to identify and click on items on the computer screen. It uses an eye-tracking camera and a button on the keyboard.
At the heart of Kumar's technology is software called EyePoint that works with standard eye-tracking hardware. The software uses an approach that requires that a person look at a Web link, for instance, and hold a "hot key" on the keyboard (usually found on the number pad on the right) as she is looking. The area of the screen that's being looked at becomes magnified. Then, the person pinpoints her focus within the magnified region and releases the hot key, effectively clicking through to the link.