Sounds interesting and if it works it would be cool but it could also turn out to be a gimmick that's not ready for prime time.
Samsung Galaxy S4 And Galaxy Note 3 To Get 'Eye Pause' And 'Eye Scroll' (Eye Tracking Technology)? | Mobile & Apps
Samsung Galaxy S4 And Galaxy Note 3 To Get 'Eye Pause' And 'Eye Scroll' (Eye Tracking Technology)? | Mobile & Apps