If the gaze tracking resolution is reasonably decent, these really extend the utility of Tobii products for neuroscience/psych research (where i've used previou

If the gaze tracking resolution is reasonably decent, these really extend the utility of Tobii products for neuroscience/psych research (where i've used previous Tobii products before), but also really does open the door for things like gaze-driven HCI for people with very limited mobility. I've prototyped gaze-based T9 input and the like before, and it's probably doable.