text: Dr. Hung invented the Facial Action Coding System, which helps identify the emotions displayed on the human face,and paintings such as Leonardo da Vinci's Mona Lisa. If this technology was used in a classroom setting, I think that it could be used to help teachers understand if some of their students are enjoying the lesson. Or it could possibly be used to tell when the students are lying to their teachers. The Facial Action Coding System shows the six basic emotion that are associated with the movements of ones facial muscles. The basic emotions are happiness, surprise, anger, disgust, fear, and sadness. This technology can also identify mixed emotions.