Ambient Intelligence European Conference, AmI 2009, Salzburg, Austria, November 18-21, 2009. Proceedings - Tscheligi, Manfred; Ruyter, Boris de; Markopoulus, Panos; Wichert, Reiner; Mirlacher, Thomas; Meschterjakov, Alexander; Reitberger, Wolfgang (Springer Berlin Heidelberg, 2009)