A user location anonymization method for location based services in a real environment

Authors:
Akiyoshi Suzuki;Mayu Iwata;Yuki Arase;Takahiro Hara;Xing Xie;Shojiro Nishio
Affiliations:
Osaka University, Osaka, Japan;Osaka University, Osaka, Japan;Microsoft Research Asia, Beijing, P. R. China;Osaka University, Osaka, Japan;Microsoft Research Asia, Beijing, P. R. China;Osaka University, Osaka, Japan
Venue:
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
Year:
2010

Citing 2
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Abstract

Recent mobile devices are mostly equipped with a GPS receiver. This trend has arisen a variety of location based services (LBSs) which enable users to search local information of their current locations. To use LBSs, a user needs to send his/her location information to a service provider. Users' location information is inherently private, since it can reveal the critical information. In this paper, we propose a method to protect the user's location privacy by sending the user's location with dummy locations, which are determined based on the user's current location. We conduct an experiment to evaluate the effectiveness of our proposed method using real users' trajectories on a real map.