NDLI: A privacy preserving system for friend locator applications

Content Provider	ACM Digital Library
Author	Sun, Tingting Hu, Fei Zan, Bin Zhang, Yanyong Gruteser, Marco
Abstract	One interesting application of online social networks is the friend locator, in which the application server informs users through mobile devices if their listed friends are nearby in terms of geographical locations. However, in such services, it is challenging to protect the privacy of an individual user. Previous privacy protection solutions for friend locators do not guarantee a high level of privacy and maintain efficiency. In this paper, we propose a privacy preserving system to guarantee both strong privacy and efficiency. Additionally, we use the polygon decomposition method to achieve both accuracy and flexibility especially for irregular areas of interest. Finally, through numerical analysis and simulation, we show that the proposed system and algorithm can achieve high privacy, efficiency, accuracy and flexibility.
Starting Page	93
Ending Page	100
Page Count	8
File Format	PDF
ISBN	9781450309011
DOI	10.1145/2069131.2069147
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-10-31
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Friend locator Privacy preserving Convex polygon
Content Type	Text
Resource Type	Article

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A privacy preserving system for friend locator applications