TY - GEN
T1 - Caché
T2 - 9th International Conference on Mobile Systems, Applications, and Services, MobiSys'11 and Co-located Workshops
AU - Amini, Shahriyar
AU - Lindqvist, Janne
AU - Hong, Jason
AU - Lin, Jialiu
AU - Toch, Eran
AU - Sadeh, Norman
PY - 2011
Y1 - 2011
N2 - We present the design, implementation, and evaluation of Caché, a system that offers location privacy for certain classes of location-based applications. The core idea in Caché is to periodically pre-fetch potentially useful location-enhanced content well in advance. Applications then retrieve content from a local cache on the mobile device when it is needed. This approach allows an end-user to make use of location-enhanced content while only revealing to third-party content providers a large geographic region rather than a precise location. In this paper, we present an analysis that examines tradeoffs in terms of storage, bandwidth, and freshness of data. We then discuss the design and implementation of an Android service embodying these ideas. Finally, we provide two evaluations of Caché. One measures the performance of our approach with respect to privacy and mobile content availability using real-world mobility traces. The other focuses on our experiences using Caché to enhance user privacy in three open source Android applications.
AB - We present the design, implementation, and evaluation of Caché, a system that offers location privacy for certain classes of location-based applications. The core idea in Caché is to periodically pre-fetch potentially useful location-enhanced content well in advance. Applications then retrieve content from a local cache on the mobile device when it is needed. This approach allows an end-user to make use of location-enhanced content while only revealing to third-party content providers a large geographic region rather than a precise location. In this paper, we present an analysis that examines tradeoffs in terms of storage, bandwidth, and freshness of data. We then discuss the design and implementation of an Android service embodying these ideas. Finally, we provide two evaluations of Caché. One measures the performance of our approach with respect to privacy and mobile content availability using real-world mobility traces. The other focuses on our experiences using Caché to enhance user privacy in three open source Android applications.
KW - caching
KW - disconnected operation
KW - location privacy
KW - location-aware applications
KW - location-enhanced content
UR - http://www.scopus.com/inward/record.url?scp=79961046640&partnerID=8YFLogxK
U2 - 10.1145/1999995.2000015
DO - 10.1145/1999995.2000015
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AN - SCOPUS:79961046640
SN - 9781450306430
T3 - MobiSys'11 - Compilation Proceedings of the 9th International Conference on Mobile Systems, Applications and Services and Co-located Workshops
SP - 197
EP - 209
BT - MobiSys'11 - Compilation Proceedings of the 9th International Conference on Mobile Systems, Applications, and Services and Co-located Workshops
Y2 - 28 June 2011 through 1 July 2011
ER -