Contriving an RFID system for Alzheimer patients tracking

The real-time location of people remains a subject of research, particularly for those suffering from Alzheimer disease. In indoor the powerful method is to localize RFID (Radio Frequency Identification) tags carried by people, but in outdoor we can easily use GPS (Global Positioning System) for its accuracy. In this paper, we study the issue of the implementation of a system for tracking Alzheimer patients who can be lost once out. For this we propose a prototype of an autonomous and wireless system combining the two technologies that enables getting informations about the position of Alzheimer patient from the intelligent tag, also warn about his absence. Finally, we propose how to incorporate this prototype in a ZigBee network to make it usable in wider fields and applications.