text: The technololgy used to read our emotions is known as the Facial Action Coding System or FACS. It models a human face and all 44 of its muscles, and looks for certain cues to tell them emotion being conveyed by the subject. FACS can tell when one is happy, sad, angry, cionfused, surprised, disgusted, and afraid. FACS can even tell the difference between "fake" emotions and real ones. This means that it can tell if a facial expression is being forced, based on what muscles are being used.