1. Security company,
http://www.boschsecurity.com.tw/content/language1/html/55_CHT_XHTML.asp
2. Android sensor,
http://developer.android.com/reference/android/hardware/Sensor.html
3. Comparison of smartphones,
http://en.wikipedia.org/wiki/Comparison_of_smartphones
4. Ravindranath, L., Newport, C., Balakrishnan, H., Madden, S.: Improving wireless network performance using sensor hints. In: Proceedings of the 8th USENIX Conference on Networked Systems Design and Implementation, p. 21. USENIX Association (2011)
5. Motorola motox,
http://www.motorola.com/us/consumers/Moto-X/moto-x,en_US,pg.html