Technology.am (May 25, 2009) — Sony Ericsson has filed a patent for a system through which a cellphone could be controlled by facial expressions, shuffling between music tracks according to visual mood analysis.

The patent, titled “Generating music playlist based on facial expression”, describes capturing an image of a user and using facial recognition to build a custom playlist depending on the listener’s mood.

The method includes playing a first song on a device, capturing an image of a user, performing facial expression recognition of the user based on the image, and selecting a second song based on a facial expression of the user.

The company suggests the brief video could be captured, tracking emotional states of happiness, sadness, surprise, anger, fear, disgust, neutrality, etc.