I like how, in persia-land, calling out stupid technology for being stupid equals being blanketly opposed to all technology. That's definitely how that works. Guess there sure are a lot of Luddites around in that case...you know, like all the people who didn't buy 3D TVs that the industry wanted them to buy, who passed on Windows 8 which Microsoft wanted them to buy, who gave the finger to the original XBone and its draconian infringements of customer rights that Microsoft wanted them to buy into, and so on and so forth. Shame on them, the horrible, horrible Luddites! Don't they understand that any new technology is granted to mortals by the Tech Gods and must be slavishly tongued in appreciation?
Isn't that just your eyes do instantly? Reading for instance.
The challenge will be blinking, incidental movement and how you click.
Think of the possibilities for less able people. It will be a godsend.
Your eyes move pretty much constantly; the hard part is keeping them fixed in a specific direction when they reflexively want to move. Try directing your gaze around the corners of your field of vision for a few minutes, and see how long it takes you to start getting a headache.