1. Human-Computer Interaction, University of Siegen, Germany
2. Information Systems and New Media, University of Siegen, Germany
3. Industrial Design, Eindhoven University of Technology, Netherlands and
Distributed and Interactive Systems, Centrum Wiskunde & Informatica, Netherlands
4. Department of Digital Media, University of Applied Sciences Upper Austria, Austria
5. Human-Centered Engineering & Design, Fraunhofer Institute for Applied Information Technology FIT, Germany
6. Information Systems, University of Siegen, Germany and
Department of Management Sciences, Hochschule Bonn-Rhein-Sieg, Germany