The active badge location system
ACM Transactions on Information Systems (TOIS)
Securing context-aware applications using environment roles
SACMAT '01 Proceedings of the sixth ACM symposium on Access control models and technologies
ACM Transactions on Internet Technology (TOIT)
The design and applications of a context service
ACM SIGMOBILE Mobile Computing and Communications Review
Location-Aware Shopping Assistance: Evaluation of a Decision-Theoretic Approach
Mobile HCI '02 Proceedings of the 4th International Symposium on Mobile Human-Computer Interaction
Who wants to know what when? privacy preference determinants in ubiquitous computing
CHI '03 Extended Abstracts on Human Factors in Computing Systems
User needs for location-aware mobile services
Personal and Ubiquitous Computing
A Conceptual Model and a Metaphor of Everyday Privacy in Ubiquitous
A Conceptual Model and a Metaphor of Everyday Privacy in Ubiquitous
An architecture for privacy-sensitive ubiquitous computing
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Privacy in pervasive environments: next generation labeling protocols
Personal and Ubiquitous Computing
Consumer perceptions of privacy, security and trust in ubiquitous commerce
Personal and Ubiquitous Computing
Human-Computer Interaction
Privacy management for secure mobility
Proceedings of the 5th ACM workshop on Privacy in electronic society
Dynamic privacy assessment in a smart house environment using multimodal sensing
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Environment Objects: A Novel Approach for Modeling Privacy in Pervasive Computing
ICOST '09 Proceedings of the 7th International Conference on Smart Homes and Health Telematics: Ambient Assistive Health and Wellness Management in the Heart of the City
Providing location privacy in pervasive computing through a hybrid mechanism
International Journal of Internet Technology and Secured Transactions
Online anonymity protection in computer-mediated communication
IEEE Transactions on Information Forensics and Security
A pervasive P3P-based negotiation mechanism for privacy-aware pervasive e-commerce
Decision Support Systems
Context sensitive privacy management in a distributed environment
OTM'10 Proceedings of the 2010 international conference on On the move to meaningful internet systems - Volume Part I
Privacy-friendly business models for location-based mobile
Journal of Theoretical and Applied Electronic Commerce Research
Middleware for location privacy: an overview
Proceedings of the 2012 ACM Research in Applied Computation Symposium
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Context-aware applications can better meet users' needs when sensing agents installed in the environment automatically provide input relevant to the application. However, this non-intrusive context usage may cause privacy concerns since sensitive user data could be leaked to unauthorized parties. Therefore, data privacy protection becomes one of the major issues for context-aware applications. In this paper, in order to provide services based on various levels of privacy concerns, we extend the Platform for Privacy Preferences of W3C and define a specification for representing user privacy preferences for context-aware applications. We also propose a privacy infrastructure, which could be installed as a plug-in service for middleware supporting context-aware applications. This infrastructure enables the middleware to automatically generate a privacy policy and the user preference file according to the current context. The middleware simply matches these two files to decide whether to proceed with the application. We demonstrate the efficacy of this approach through a prototype implementation.