**About the Editor**

**Sergio Martin** (Associate Professor) works at UNED (National University for Distance Education, Spain). He received a Ph.D. from the Electrical and Computer Engineering Department of the Industrial Engineering School of UNED. He is a computer engineer in distributed applications and systems at the Carlos III University of Madrid. He has taught subjects related to microelectronics and digital electronics since 2007 in the Industrial Engineering School of UNED. He has participated since 2002 in national and international research projects related to mobile devices, ubiquitous computing and the Internet of Things as well as in projects related to "e-learning", virtual and remote labs and new technologies applied to distance education. He has published more than 200 papers both in international journals and conferences and received more than 25 awards during his career. He has organized several international conferences and has served as associate/guest editor of several JCR journals.
