"When it comes to entering computer data without a keyboard, the
eyes have it.
"Replacing a keyboard or mouse, eye-scanning cameras mounted on
computers have become necessary tools for people without limbs or
those affected with paralysis. The camera tracks the movement of
the eye, allowing users to 'type' on a virtual keyboard as they
look at the screen.
"And now, researchers from the Cavendish Laboratory at Cambridge
University say they have developed software that replaces the
standard QWERTY keyboard layout with one that is nearly twice as
efficient, more accurate and easier on the eyes...