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Can it track eye movements? A cheap eye tracker would be awesome so all the window's i'm looking at are in focus.

This method is just for face recognition. If you're interested in tracking eye movements take a look at face detection + facial landmarks:

https://www.pyimagesearch.com/2017/04/03/facial-landmarks-dl...

And then techniques to localize the center of the eye:

http://thume.ca/projects/2012/11/04/simple-accurate-eye-cent...

Sounds like a great idea. I would be a little worried about how often I actually am not looking at the window I am typing in. Though, I suspect there are obvious patterns.

I think it would be easy to train for novices.

I think that is what worries me. For most purposes, this is fine. I do, however, sometimes have a transcription use case. This is fairly uncommon, but I worry that I would get bitten by it being taken away.

That make sense? I still think this is worth trying.

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