I'm Here! Privacy Challenges in Mobile Location Sharing
Marcello Paolo Scipioni, Marc Langheinrich · 2010
With the availability of GPS receivers in more and more mo-bile handsets, location sharing has become the next mobile killer-app. Services like Google Latitude or Yahoo’s FireEa-gle are used by thousands of subscribers to share their cur-rent location in real-time with their family, their friends, or even publish it online, while Sense Network’s CitySense ap-plication uses live movement traces from entire metropoli-tan areas to show users the “most popular places ” in the city. Even though research in location privacy has proposed a range of solutions for safeguarding location information, it is unclear how existing proposals can be applied to such applications. In this paper, we set forth a categorization of location sharing applications, outline the various privacy challenges each category poses, and discuss the shortcomings of existing solutions.