An app created by a little startup Emotient will be able to detect a change in the frame of mind of the people, measuring even the most indiscernible gestures of the face.
According to Marian Bartlett, Emotient cofounder, the first part of the process detects the tipe of emotion, between positive, negative and neutral. Then, it deepens inn the feeling, guesing if it´s happiness, fear, anger, etc.
The idea of the app is to use it on shops and outlets, for see if the sent product causes a good or bad feeling in the consumer.
However, this technology probably will be used for security, like a lying detector.