1. Abowd, G.D., Atkeson, C.G., Hong, J., Long, S., Kooper, R., Pinkerton, M.: Cyberguide: a mobile context-aware tour guide. Wireless Networks 3(5), 421–433 (1997)
2. Ballagas, R., Rohs, M., Sheridan, J.G., Borchers, J.: Sweep and Point & Shoot: Phonecam-based interactions for large public displays. In: CHI 2005: Extended Abstracts of the SIGCHI Conference on Human Factors in Computing Systems, pp. 1200–1203. ACM Press, New York (2005)
3. Ballagas, R., Walz, S.: REXplorer: Using Iterative Design Techniques for Pervasive Games. In: Magerkurth, C., Röcker, C. (eds.) Pervasive Games, Springer, Heidelberg (2007)
4. Bamford, W., Coulton, P., Edwards, R.: Space-time travel blogging using a mobile phone. In: Proceedings of the International Conference on Advances in Computer Entertainment Technology, pp. 1–8 (2007)
5. Benford, S., Magerkurth, C., Ljungstrand, P.: Bridging the physical and digital in pervasive gaming. Commun. ACM 48(3), 54–57 (2005)