Ambient Intelligence European Conference, AmI 2007, Darmstadt, Germany, November 7-10, 2007. Proceedings - Schiele, Bernt; Dey, Anind K.; Gellersen, Hans; Ruyter, Boris de; Tscheligi, Manfred; Wichert, Reiner; Aarts, Emile; Buchmann, Alejandro (Springer Berlin Heidelberg, 2007)