This is a good idea. In addition to the input cursor, have an eye cursor showing on the text tracking where the eyes are looking at. The eye cursor moves to w

This is a good idea. In addition to the input cursor, have an eye cursor showing on the text tracking where the eyes are looking at. The eye cursor moves to where the eyes focus. Press a special key, like ctrl-space, to set the input cursor to the eye cursor. The cameras can be calibrated when the eyes focus at the 4 corners of the editor. For the cameras, may be a lidar would work better? IPhone has these 3D face scan for the longest time for unlocking. Those read the eyes. Eye tracking HUD for fighter pilot have been working for a long time, so it's doable. Edit: This page has some info on eye tracking. https://imotions.com/blog/eye-tracking-work/ https://imotions.com/blog/eye-tracking-work/