Attention Tracking

I think it would be really cool to see the implementation of eye tracking software as well for this. https://api.gazerecorder.com/ you can test in a browser to see how well it works after a short calibration process. Using heat maps, it could alert the presenter after a certain period of viewing inactivity for presentation focused sessions. Or, it could conglomerate a heat map of where people are focusing their attention the most in order to improve the effectiveness of a presentation/training.