Capturing, sharing, and using local place information

ABSTRACT

With new technology, people can share information about everyday places they go; the resulting data helps others find and evaluate places. Recent applications like Dodgeball and Sharescape repurpose everyday place information: users create local place data for personal use, and the systems display it for public use. We explore both the opportunities -- new local knowledge, and concerns -- privacy risks, raised by this implicit information sharing. We conduct two empirical studies: subjects create place data when using PlaceMail, a location-based reminder system, and elect whether to share it on Sharescape, a community map-building system. We contribute by: (1) showing location-based reminders yield new local knowledge about a variety of places, (2) identifying heuristics people use when deciding what place-related information to share (and their prevalence), (3) detailing how these decision heuristics can inform local knowledge sharing system design, and (4) identifying new uses of shared place information, notably opportunistic errand planning.

REFERENCES

• 1: Mark S. Ackerman , Lorrie Cranor, Privacy critics: UI components to safeguard users' privacy, CHI '99 extended abstracts on Human factors in computing systems, May 15-20, 1999, Pittsburgh, Pennsylvania [doi>10.1145/632716.632875]
• 2: Ackerman, M. S. (2000). The Intellectual Challenge of CSCW: The Gap Between Social Requriements and Technical Feasibility. Human-Computer Interaction, 15 (2--3). 181--205.
• 3: Casey Alt , Owen Astrachan , Jeffrey Forbes , Richard Lucic , Susan Rodger, Social networks generate interest in computer science, Proceedings of the 37th SIGCSE technical symposium on Computer science education, March 03-05, 2006, Houston, Texas, USA
• 4: Daniel Ashbrook , Thad Starner, Using GPS to learn significant locations and predict movement across multiple users, Personal and Ubiquitous Computing, v.7 n.5, p.275-286, October 2003 [doi>10.1007/s00779-003-0240-0]
• 5: Barkhuus, L., Dey, A. (2003). Location-Based Services for Mobile Telephony: a Study of Users' Privacy Concerns. Proc., INTERACT, 709--712.
• 6: Buyukkokten, O., Cho, J., Garcia-Molina, H., Gravano, L., Shivakumar, N. (1999). Exploiting geographical location information of web pages. ACM SIGMOD Workshop on the Web and Databases.
• 7: Sunny Consolvo , Ian E. Smith , Tara Matthews , Anthony LaMarca , Jason Tabert , Pauline Powledge, Location disclosure to social relations: why, when, & what people want to share, Proceedings of the SIGCHI conference on Human factors in computing systems, April 02-07, 2005, Portland, Oregon, USA [doi>10.1145/1054972.1054985]
• 8: Finder, A. (2006). For Some, Online Persona Undermines a Résumé. New York Times. http://www.nytimes.com/2006/06/11/us/11recruit.html?ei=5090&en=ddfbe1e3b386090b&ex=1307678400
• 9: B. Friedman , D. Howe , E. Felten, Informed Consent in the Mozilla Browser: Implementing Value Sensitive Design, Proceedings of the 35th Annual Hawaii International Conference on System Sciences (HICSS'02)-Volume 8, p.247, January 07-10, 2002
• 10: Froehlich, J., Chen, M., Smith, I., Potter, F. (2006). Voting With Your Feet: An Investigative Study of the Relationship Between Place Visit Behavior and Preference. Proc. Ubicomp.
• 11: Goetz, S., Swaminathan, H. (2006). WalMart and County-Wide Poverty. Social Science Quarterly (87) 2, 211--227.
• 12: Ralph Gross , Alessandro Acquisti , H. John Heinz, III, Information revelation and privacy in online social networks, Proceedings of the 2005 ACM workshop on Privacy in the electronic society, November 07-07, 2005, Alexandria, VA, USA [doi>10.1145/1102199.1102214]
• 13: William C. Hill , James D. Hollan , Dave Wroblewski , Tim McCandless, Edit wear and read wear, Proceedings of the SIGCHI conference on Human factors in computing systems, p.3-9, May 03-07, 1992, Monterey, California, United States [doi>10.1145/142750.142751]
• 14: Marty Himmelstein, Local Search: The Internet Is the Yellow Pages, Computer, v.38 n.2, p.26-34, February 2005 [doi>10.1109/MC.2005.65]
• 15: Jason I. Hong , Jennifer D. Ng , Scott Lederer , James A. Landay, Privacy risk models for designing privacy-sensitive ubiquitous computing systems, Proceedings of the 5th conference on Designing interactive systems: processes, practices, methods, and techniques, August 01-04, 2004, Cambridge, MA, USA [doi>10.1145/1013115.1013129]
• 16: Iachello, G., Smith, I., Consolvo, S., Abowd, G., Hughes, J., Howard, J., Potter, F., Scott, J., Sohn, T., Hightower, J., Lamarca, A. (2005) Control, Deception and Communication: Evaluating the Deployment of a Location-Enhanced Messaging Service. Proc. Intl. Conf. on Ubiquitous Computing.
• 17: Klepis, N., Nelson, W., Ott, W., Robinson, J., Tsang, A., Switzer, P., Behar, J., Hern, S., Engelmann, W. (2001). The National Human Activity Pattern Survey, Journal of Exposure Analysis and Environmental Epidemiology, May-June, v. 11, 3, 231--252.
• 18: Scott Lederer , I. Hong , K. Dey , A. Landay, Personal privacy through understanding and action: five pitfalls for designers, Personal and Ubiquitous Computing, v.8 n.6, p.440-454, November 2004 [doi>10.1007/s00779-004-0304-9]
• 19: Pamela J. Ludford , Dan Frankowski , Ken Reily , Kurt Wilms , Loren Terveen, Because I carry my cell phone anyway: functional location-based reminder applications, Proceedings of the SIGCHI conference on Human Factors in computing systems, April 22-27, 2006, Montréal, Québec, Canada [doi>10.1145/1124772.1124903]
• 20: Olson, J.S., Grudin, J., and Horvitz, E. (2005). A study of preferences for sharing and privacy. CHI Tech Note.
• 21: Leysia Palen , Paul Dourish, Unpacking "privacy" for a networked world, Proceedings of the SIGCHI conference on Human factors in computing systems, April 05-10, 2003, Ft. Lauderdale, Florida, USA [doi>10.1145/642611.642635]
• 22: Pillsbury, R. (1987). From Hamburger Alley to Hedgerose Heights: Toward a Model of Restaurant Location Dynamics. The Professional Geographer v 39, Issue 3, 326--346.
• 23: Marc Rettig, Prototyping for tiny fingers, Communications of the ACM, v.37 n.4, p.21-27, April 1994 [doi>10.1145/175276.175288]
• 24: Salter, C. (2003). How MapQuest Gets You From Here to There. FastCompany Magazine Issue 76. www.fastcompany.com/magazine/76/mapquest.html
• 25: Sherif, M., Murphy, G. (1936). The Psychology of Social Norms. Harper and Brother: New York.
• 26: Michael Terry , Elizabeth D. Mynatt , Kathy Ryall , Darren Leigh, Social net: using patterns of physical proximity over time to infer shared interests, CHI '02 extended abstracts on Human factors in computing systems, April 20-25, 2002, Minneapolis, Minnesota, USA [doi>10.1145/506443.506612]
• 27: Loren Terveen , David W. McDonald, Social matching: A framework and research agenda, ACM Transactions on Computer-Human Interaction (TOCHI), v.12 n.3, p.401-434, September 2005 [doi>10.1145/1096737.1096740]
• 28: Tse, A., Sin, L., Yim, F. (2002). How a crowded restaurant affects consumers' attribution behavior. Intl. Journal of Hospitality Mgmt. 21, 449--454.

INDEX TERMS

Primary Classification:
  H. Information Systems
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.m Miscellaneous

General Terms:
Design, Human Factors, Security

Keywords:
disclosure interface, local knowledge, local search, location privacy, location-based reminder, map-based interface