Date Added: Mar 2013
As an emerging technology, WSN (Wireless Sensor Networks) composed from a large number of small, low data rate and inexpensive node that communicate in order to sense or control a physical phenomenon. WSN have a lot of applications like disaster management, health, military and security, and enormously attracted the community of researchers and has fueled the interest in sensor networks during the past few years. Sensors are typically capable of wireless communication and able to solve several problems in numerous domains. During the Hajj season, the organizers faced a lot of problems related to the health of pilgrims and their position in the area of El Hajj.