text: The purpose of the Facial Action Coding System is to recognize the subtle facial movements that humans use to express their emotions. The process of creating this new technology began with a 3-D computer model of the human face; all 44 facial muscles were included. With the of psychologists, such as Dr. Paul Eckman. Eckman classified six basic emotions such as: happiness, surprise, anger, disgust, fear, and sadness. Then associated each with characteristic movements of the facial muscles.