Wow, this is really good. I just grabbed your GitHub example and it ran on my iPhone easily. Thanks so much.

I just today started to think it can't be too hard to write an eye tracker - as I'm looking at other eye tracker products for the #Abilities market (those in wheel chairs, etc). For example: https://us.tobiidynavox.com/pages/td-pilot

So now if I can mimic the iPad with a matrix of icons - and from the eye movement detect which item was chosen (blinking or winking) - that I'm onto something. This would connect with the IoT world nicely.

DM me if you are interested in collaborating.

thanks.