For those with curiosity as to practical use, there are commercial products for this, which initially focused on fatigue in truck drivers. https://www.seeingma

For those with curiosity as to practical use, there are commercial products for this, which initially focused on fatigue in truck drivers. https://www.seeingmachines.com/industry-applications/automotive/ https://www.seeingmachines.com/industry-applications/automot... https://www.youtube.com/watch?v=gvN1elQ8NLY https://www.youtube.com/watch?v=gvN1elQ8NLY These systems often use IR illuminators, as the contrast between pupil and iris is dramatic under IR. The IR can also be boosted to compensate for other light in the cabin. Spectacles are obviously impediments.[1] Eye tracking is also great for seeing how people use user interfaces, including VR and AR scenes.[2] Cheap custom systems are available too[3], some of which are open source[4]. 1- https://www.diva-portal.org/smash/get/diva2:306465/FULLTEXT01.pdf https://www.diva-portal.org/smash/get/diva2:306465/FULLTEXT0... 2- https://www.youtube.com/watch?v=rrj1F3rHJd0 https://www.youtube.com/watch?v=rrj1F3rHJd0 3- http://thume.ca/2016/03/24/eye-tracker-reviews-pupil-labs-tobii-eyex-eye-tribe-tobii-x2-30/ http://thume.ca/2016/03/24/eye-tracker-reviews-pupil-labs-to... 4- https://pupil-labs.com/pupil/ https://pupil-labs.com/pupil/