[Mindey] Thanks for taking a look! I have a goal which is here: https://infty.xyz/#/en/@/topic/96 The hope I had here was to create several different ideas for tracking personal energy. We might also, for example, track personal energy using 1. heart rate variation (using an H7) 2. reaction speed (using e.g. tetris scores) Neither of these would be as unobtrusive as the eye reader. The goal here is to track the personal energy, which can be used for many purposes (for example to try diets or find good music). I still think this structure is good. Maybe you can suggest some specific changes to make it more fitting? As far as names I would probably call it infty-eye-tracker or z-eye-tracker or something else very simple (maybe eye-energy?) because naming is very time consuming :) I think there is some reason to think it can be done on a smartphone which would be best because they are pretty cheap and have good docks available.