text: The Facial Action Coding System can regonize how a student may be feeling. This could be beneficial for teachers and councilors because then they could help the student with any emotional problems they may be having. The technology, "can even identify mixed emotions". Mixed emotions can show a mix of happiness and sadness at the same time because people's emotions aren't always clear, and people can appear as something they are not. Facial expressions for each and every emotion are diverse.