A

The concept of facial recognition of chair’s owner revolves around marking the face with 25 fixed points and evaluation their distance from a determinate point. In other occasions, when user is approaching, another scan will be conducted to reevaluate point’s distances and then they will be compare with normal facial expression to detect user’s general emotion.

According to the distances between the points of the face, the chair changes. Some of the changes occur suddenly and some occur after a while sitting on the chair.