Gerrit Kahl is a researcher at the German Research Center for Artificial Intelligence (DFKI) in Saarbrücken. He is also working at the Innovative Retail Laboratory, a living lab representing an instrumented shopping environment. He is currently working on his PhD thesis on the topic "Applying the Dual Reality Paradigm to Instrumented Shopping Environments". In this context, he is studying the visualization of simulator in- and outputs in a virtual model.

Tim Schwartz is a researcher at DFKI (German Research Center for Artificial Intelligence) and is associated to the Cluster of Excellence for Multimodal Computing and Interaction at the Saarland University. He is currently working on his PhD thesis on the topic "Always Best Positioned Systems", which deals with indoor positioning methods and their applications. Tim was co-organizer and moderator of the MIAA workshop at IUI 2010.

Petteri Nurmi is a researcher at the Helsinki Institute for Information Technology HIIT. He has studied computer science at the University of Helsinki, where he obtained a M.Sc. in 2006 and a Ph.D. in 2009. Currently, he is the co-leader of the Adaptive Computing research group at HIIT. His research interests focus on intelligent mobile systems, including personalization, context recognition and novel interaction techniques. He has published over 40 scientific articles and served as a reviewer and program committee member for several conferences and journals. He was the workshop co-chair for Pervasive 2010 and he is a program committee member for IUI 2011. He has previously participated in the organization of four workshops, most recently the Pervasive User Modeling and Personalization workshop held at the UMAP 2010 conference.

Andreas Forsblom is a research assistant at the Helsinki Institute for Information Technology HIIT. He studies computer science at the University of Helsinki and has many years of industry experience.

Eyal Dim is a researcher at the University of Haifa. He is currently working on his PhD thesis on the topic "Exploring the Potential of Social Signal Processing Technology for Supporting Leisure Activities: the Museum Group Visit Experience", which deals with indoor sensors and processing methods for detection and analysis of group social context.

Boris Brandherm is a researcher at the German Research Center for Artificial Intelligence (DFKI) in Saarbrücken. He has studied computer science at Saarland University, where he has been awarded a Diploma (M.Sc.) in 2000 and a Ph.D. in 2006. His current research is focusing on sensor data fusion and on the exploitation of digital memories for user support in combination with Dual Reality. Boris was co-organizer and submission chair of the Intelligent Virtual Agents (IVA) conference in Tokyo 2008.