Smartphone app recognizes stress and depression

The Dartmouth research this article mentions:

Authors: Rui Wang, Fanglin Chen, Zhenyu Chen, Tianxing Li, Gabriella Harari, Stefanie Tignor, Xia Zhou, Dror Ben-Zeev and Andrew T. Campbell

StudentLife: Assessing Mental Health, Academic Performance and Behavioral Trends of College Students using Smartphones

http://studentlife.cs.dartmouth.edu/studentlife.pdf

Even Microsoft is working on a mood driven device that works based on the emotional state of a user. They have filed a patent application for this concept.

The mood driven device uses various sensors to determine mood of a user and then change its shape that visually mirrors user’s emotional state.

The patent application also suggests that Microsoft will work on a robotic butterfly that will move its wings according to your mood that represents your emotional state.

You can read more about it here - http://greybmusings.wordpress.com/2014/07/04/microsoft-devic...

Isn't owning a smartphone a sign of depression by itself?