APPLE INSIDER
To bring the ability to track where a wearer’s gaze and attention are focused, without requiring costly processing or battery-draining performance, Apple is having to develop a whole new system of eye tracking technology for “Apple Glass.”
“Apple Glass” may be able to track a user’s eyes without the current cumbersome systemsFuture Apple AR devices are not going to have any problem figuring out when you’ve turned your head to the left or right. What’s going to be much more difficult is figuring out when your head is stationary but your eyes are moving.
Source: APPLE INSIDER