Distributed, Ambient, and Pervasive Interactions : First International Conference, DAPI 2013, Held as Part of HCI International 2013, Las Vegas, NV, USA, July 21-26, 2013. Proceedings - Streitz, Norbert (Herausgeber); Stephanidis, Constantine (Herausgeber) (Information Systems and Applications, incl. Internet/Web, and HCI, 2013)