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.