text: The article informs people the technology uses the major 44 muscles in the face. When the face moves it can detect which muscles are put into use and identify them with one the six basic expressions- happiness, suprise, anger, disgust, fear, and sadness. These basic expressions off diversity more than just the basic happy and sad, and also account for most emotions. To make sure this is even more effective the given expression is put againts a neurtral face for a comparison. By giving a neutral face and an expression it gives a independent and depent variable. This would ensure a correct basis rather than just giving the face with an expression. It would also be able to tell if a student were enjoying a lesson or not. It help the teacher too see what topics they could make more interesting.