Sensors 2015, 15, 26783-26800; doi:10.3390/s151026783 sensorsOPEN ACCESS ISSN 1424-8220 www.mdpi.com/journal/sensors Article Can Smartwatches Replace Smartphones for Posture Tracking? Bobak Mortazavi 1;y;*, Ebrahim Nemati 2;y, Kristina VanderWall 3, Hector G. Flores-Rodriguez 4, Jun Yu Jacinta Cai 5, Jessica Lucier 3, Arash Naeim 3 and Majid Sarrafzadeh 1;2 1 Computer Science Department, University of California, Los Angeles, Los Angeles, CA 90095, USA; E-Mail:
[email protected] 2 Department of Electrical Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA; E-Mail:
[email protected] 3 School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; E-Mails:
[email protected] (K.V.W.);
[email protected] (J.L.);
[email protected] (A.N.) 4 Computer Science Department, El Camino College, Torrance, CA 90506, USA; E-Mail: hct.fl
[email protected] 5 Computer Science Department, University of Alabama Birmingham, Birmingham, AL 35233, USA; E-Mail:
[email protected] y These authors contributed equally to this work. * Author to whom correspondence should be addressed; E-Mail:
[email protected]. Academic Editors: Steffen Leonhardt and Daniel Teichmann Received: 14 July 2015 / Accepted: 16 October 2015 / Published: 22 October 2015 Abstract: This paper introduces a human posture tracking platform to identify the human postures of sitting, standing or lying down, based on a smartwatch. This work develops such a system as a proof-of-concept study to investigate a smartwatch’s ability to be used in future remote health monitoring systems and applications.