When you work on a computer, your hands are typically glued to a keyboard and mouse or trackpad to control what goes on on the screen–but your eyes scatter and dart around as you focus on specific details. This is something Net researchers have known how to exploit for a while, and Google even uses eye-tracking tech to work out where attention-grabbing hotspots are on its homepage so it can optimize its design to better position interface controls and (yes, of course) adverts.
Lenovo is exploiting Tobii tech in a much more interactive way. The system is at heart just an infrared light source and a camera that observers a user’s eyes–by looking for reflective IR “glints” off your eyeballs. It combines that with clever software that works out where the eyes are positioned in space in front of the computer, and where they’re looking–translating the interpreted gaze into a corresponding position on the screen.
The result is that you can glance at an on-screen object like an icon and the system will pop up more info on that item. Maps can be scrolled or zoomed depending on the area of interest that you’re concentrating on, and more subtle UI events can be worked in to improve your workflow. These include things like dimming windows you’re not looking at, switching focus between windows based on which ones you what to see, and darkening the display if you’re not sitting looking at the machine (a far better way of working out that you’re being “idle” than merely timing-out if you don’t touch the keyboard or mouse for a certain period). For an idea about how this may work, the video below is of a Tobii eye-track UI developed way back in 2007.
The makers think this system results in a “thrilling” improvement on the way we interact with computers, and though this initial implementation is a proof of concept rather than a salable product, it’s highly likely that we’ll all be using similar systems sometime soon–even if they’re not from Lenovo.
That’s because Apple is currently championing intuitive UI design, and this sort of natural enhancement to PC control is right up it’s alley–it’s even patented clever hands-off sensing tech to boost the natural interaction powers of its future iPads and iPhones. Nokia has looked at hands-free control of its smartphones, and Microsoft is pushing its plans for a “natural user interface” in future Windows designs. Now that consumer’s are used to touching, stroking and gently taping their consumer electronics, or waving their arms in the air in front of their Xbox to control games (and, in the near future, interactive displays in store windows) then they’re likely almost ready to let their PC use eye-tracking info, too.
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