The active badge location system
ACM Transactions on Information Systems (TOIS)
Concepts for personal location privacy policies
Proceedings of the 3rd ACM conference on Electronic Commerce
A Probabilistic Room Location Service for Wireless Networked Environments
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
A formal privacy system and its application to location based services
PET'04 Proceedings of the 4th international conference on Privacy Enhancing Technologies
Privacy and the access of information in a smart house environment
Proceedings of the 15th international conference on Multimedia
Dynamic privacy assessment in a smart house environment using multimodal sensing
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Security patterns for physical access control systems
Proceedings of the 21st annual IFIP WG 11.3 working conference on Data and applications security
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Increasing automation of buildings enables rich information streams about the activities of building users to reach networked computer systems. Privacy concerns typically cause this information to be accessible only by building managers and security personnel. However, if appropriate privacy mechanisms can be implemented, then it is possible to deploy location information systems that can contribute to the convenience and efficiency of users. This paper describes a three step approach to privacy-sensitive release of location information collected by building sensors. These steps entail defining an ownership model, defining environment events to be monitored, and creating a sharing model. These steps are described mathematically and then validated through a case study for a system called Janus's Map which provides a location information system for the card reader, door, and occupancy sensors of a modern smart building.