Location-based services (LBSs) are services provided on the basis of the position of users.
There are different types of LBSs and different possible scenarios, but, in any case, serious …

Location-based social networks (LBSNs) are convenient, but users must reveal their location
information to network servers to enjoy an LBSN's services. However, user location …

Users of location-based services (LBSs) may have serious privacy concerns when using
these technologies since their location can be utilized by adversaries to infer privacy …

Geo-social networking systems, such as Foursquare and Face-book Places, where users
perform interactions based on their self-reported locations are growing fast nowadays. The …

Mobile users increasingly report their co-locations with other users, in addition to revealing
their locations to online services. For instance, they tag the names of the friends they are …

The offering of location based services requires an in-depth knowledge of the subscriber's
whereabouts. Thus, without the existence of strict safeguards, the deployment of such …

Due to the growing use of mobile devices, location-based services have become popular. A
location service often requires the user's exact location to provide appropriate services and …

Locationbased services (LBS) use geospatial data of mobile device to provide information in
real time. A key concern in using these services is the need to reveal the user's exact …

An increasing number of the mobile devices nowadays embedded with the GPS module (eg,
smart phones, PDAs and RFIDs), which makes the user can facilitated from the location …

The increasing use of mobile devices, along with advances in telecommunication systems,
increased the popularity of Location-Based Services (LBSs). In LBSs, users share their exact …