How To Smile | Psychology Today
According to the story, each morning the 500 employees of the Keihin Electric Express Railway Company smile into a camera hooked up to a computer. Analyzed are facial features such as lip curvature and facial wrinkles. Spit back at each employee is an overall rating of his or her smile quality, from 0 to 100. If the smile quality is insufficient, the computer provides feedback - e.g., "lift up your mouth corners." The computer also prints out an ideal smile to which employees can refer throughout the day.