Proximity detection is an important location-based service (LBS) that helps mobile users find
nearby friends. However, this service usually requires users to submit their locations to the …

A location-based service called friend-locator notifies a user if the user is geographically
close to any of the user's friends. Services of this kind are getting increasingly popular due to …

Proximity detection is an emerging technology in Geo-Social Networks that notifies mobile
users when they are in proximity. Nevertheless, users may be unwilling to participate in such …

Proximity detection is one of the most popular location-based applications in social networks
when users intend to find their nearby friends. However, the existing proximity detection has …

The aim of proximity services is to raise alerts based on the distance between moving
objects. While distance can be easily computed from the objects' geographical locations …

In the last decade, location information became easily obtainable using off‐the‐shelf mobile
devices. This gave momentum to developing location‐based services (LBSs) such as …

A privacy-aware proximity detection service determines if two mobile users are close to each
other without requiring them to disclose their exact locations. Existing proposals for such …

In the last decade, location information became easily obtainable using off-the-shelf mobile
devices. This gave a momentum to developing Location Based Services (LBSs) such as …

With the pervasiveness of location-aware mobile terminals and the popularity of social
applications, location-based social networking service (LBSNS) has brought great …

As the ubiquity of smartphones increases we see an increase in the popularity of location
based services. Specifically, online social networks provide services such as alerting the …