Location Privacy in Mobile Systems: A Personalized Anonymization Model
ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
A peer-to-peer spatial cloaking algorithm for anonymous location-based service
GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems
Anonymous Usage of Location-Based Services Through Spatial and Temporal Cloaking
Proceedings of the 1st international conference on Mobile systems, applications and services
Anonymity in Location-Based Services: Towards a General Framework
MDM '07 Proceedings of the 2007 International Conference on Mobile Data Management
Realistic Driving Trips For Location Privacy
Pervasive '09 Proceedings of the 7th International Conference on Pervasive Computing
PAD: privacy-area aware, dummy-based location privacy in mobile services
Proceedings of the Seventh ACM International Workshop on Data Engineering for Wireless and Mobile Access
A distortion-based metric for location privacy
Proceedings of the 8th ACM workshop on Privacy in the electronic society
Location privacy protection through obfuscation-based techniques
Proceedings of the 21st annual IFIP WG 11.3 working conference on Data and applications security
Blind evaluation of nearest neighbor queries using space transformation to preserve location privacy
SSTD'07 Proceedings of the 10th international conference on Advances in spatial and temporal databases
Anonymizing user location and profile information for privacy-aware mobile services
Proceedings of the 2nd ACM SIGSPATIAL International Workshop on Location Based Social Networks
A user location anonymization method for location based services in a real environment
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
A formal model of obfuscation and negotiation for location privacy
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Preserving user location privacy in mobile data management infrastructures
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
Location anonymization using real car trace data for location based services
Proceedings of the 8th International Conference on Ubiquitous Information Management and Communication
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A variety of services utilizing users' positions have become available because of rapid advances in Global Positioning System (GPS) technologies. Since location information may reveal private information, preserving location privacy has become a significant issue. We proposed a dummy-based method of anonymizing location to protect this privacy in our previous work that generated dummies based on various restrictions in a real environment. However, the previous work assumed a simplified mobility model in which users kept moving and did not stop. If we assume a more realistic mobility model in which users often pause to visit various attractions, it becomes increasingly more difficult to generate dummies that will move naturally. In this paper, we assumed that the users' movements are known in advance and propose a dummy-based anonymization method based on user movements, where dummies move naturally while stopping at several locations. We simulated user movements on real map information and verified the method we propose was more effective than the previous one.