Had a blast at LauzHack '16 using this library to make a Chrome extension enabling "no-hands scrolling"[1]. Sadly, reading web articles while eating with both hands is still a dream. We managed to get okay-ish results on a MacBook Pro in perfect lighting from time to time, but nothing consistent. In variable lighting and on lower-end laptops we found it impossible.
I wonder if it would be possible with a better webcam and good, consistent lighting.