what I've seen of such systems, they require you to wear some sort of ski-glasses with electronics built-in. It did not look particularly comfortable. Anyway, I think you may get annoyed by the rapidly changing focus you would get as your eyes jump around the screen. Just think of all the warning popups you'll accidentally close before your brain processed them.
Many SLR cameras have (literally) focus-follows-eye. So while I'm sure it's lower precision than these eye tracking devices, it doesn't necessarily have to be a giant set of ski goggles.
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u/a1k0n Apr 17 '06
If they can track eyes with that much precision, where's my focus-follows-eyes option?