Since 2009, I am a professor for computer science at Saarland University heading the Ubiquitous Media Technology Lab, and the scientific director of the Innovative Retail Laboratory (IRL) at the German Research Center for AI (DFKI). Until then I have been a professor and the managing director at the Institute for Geoinformatics (ifgi) at the University of Münster. My main research interests are Mobile and Ubiquitous Spatial Assistance Systems, combining the research fields of Intelligent User Interfaces, User Modeling, Cognitive Sciences, and Ubiquitous Computing. Short Bios in English and German as well as printable images are available.