Location Privacy in Mobile Systems: A Personalized Anonymization Model
ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
\ell -Diversity: Privacy Beyond \kappa -Anonymity
ICDE '06 Proceedings of the 22nd International Conference on Data Engineering
The new Casper: query processing for location services without compromising privacy
VLDB '06 Proceedings of the 32nd international conference on Very large data bases
Anonymous Usage of Location-Based Services Through Spatial and Temporal Cloaking
Proceedings of the 1st international conference on Mobile systems, applications and services
Location anonymity in continuous location-based services
Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems
Supporting anonymous location queries in mobile environments with privacygrid
Proceedings of the 17th international conference on World Wide Web
Understanding mobility based on GPS data
UbiComp '08 Proceedings of the 10th international conference on Ubiquitous computing
ICDE '08 Proceedings of the 2008 IEEE 24th International Conference on Data Engineering
Using mobile phones to determine transportation modes
ACM Transactions on Sensor Networks (TOSN)
Enabling private continuous queries for revealed user locations
SSTD'07 Proceedings of the 10th international conference on Advances in spatial and temporal databases
Location proofing using identity based encryption and the Google cloud on the mobile applications
Proceedings of the 50th Annual Southeast Regional Conference
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Privacy in location-based systems is a major concern, since many mobile phones have a GPS sensor that can report location within 10 meters of accuracy. The contributions of this paper are in three folds. First, we examine privacy issues in snapshot queries, and present our work and results in this area. The proposed method can guarantee that all queries are protected, while previously proposed algorithms only achieve a low success rate in some situations. Next, we discuss continuous queries and illustrate that current snapshot solutions cannot be applied to continuous queries. Then, we present results for our robust models for continuous queries. Finally, we show evaluation results when we add another dimension to privacy in location based systems, referred to as transportation mode homogeneity.