  During the last decade with the rapid increase in indoor wireless
communications, location-aware services have received a great deal of attention
for commercial, public-safety, and a military application, the greatest
challenge associated with indoor positioning methods is moving object data and
identification. Mobility tracking and localization are multifaceted problems,
which have been studied for a long time in different contexts. Many potential
applications in the domain of WSNs require such capabilities. The mobility
tracking needs inherent in many surveillance, security and logistic
applications. This paper presents the identification of employees in National
Technical University in Athens (IE-NTUA), when the employees access to a
certain area of the building (enters and leaves to/from the college), Radio
Frequency Identification (RFID) applied for identification by offering special
badges containing RFID-tags.
