David Benyon is Professor of Human-Computer Systems and director of the Centre for Interaction Design at Edinburgh Napier University, UK. He is also director of Interdisciplinary Research in the Faculty of Engineering, Computing and the Creative Industries. Prof. Benyon has been working in the area of human-computer interaction (HCI) and interaction design for over 25 years. He has written widely on the subject with over 150 referred publications covering HCI, interaction design and intelligent user interfaces. He published one of the first textbooks on HCI in 1994 and recently completed the third edition of the textbook Designing Interactive Systems: a comprehensive guide to human-computer interaction and interaction design (Pearson, 2013).