Review on Privacy Preserving Location Monitoring Services in WSNs

Wireless sensor technologies gave rise to many new applications widely used by general citizens as well as military operations. Numerous cases of these applications are based on the information of personal locations. Observations of these locations with untrusted server cause privacy threats to the individuals being monitored. To deal with such a privacy break, the concept of aggregate location information has been proposed using counting sensors, which would also pretence retreat breaches. To overcome this problem k-anonymity privacy approaches are employed, wherein every person is indiscernible among k-persons. The objective this review is to study various location preserving protocols which can provide high quality location monitoring services for system user, while preserving personal location privacy. This paper formalizes the summary of different location privacy preserving schemes for wireless sensor networks.