This may be obvious or trivial, but it was a new insight to me. I've never used eye tracking in software/web design or thought it would have much utility. Nonetheless I wandered up to one of the eye-tracking vendors at the CHI conference and got into a conversation with the rep. He said that most of their sales and emphasis were on contexts where there was something other than a single screen to look at -- such as automobile dashboards, complex control panels like nuclear power plants, and the like. In those situations, seeing where people are looking in response to stimuli like alerts, gauges, oncoming obstacles etc., that can come from many different directions, is very important and the eye tracking apparatus can be extremely helpful. That made a lot of sense to me.
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