Human tracking in certain indoor and outdoor area by combining the use of RFID and GPS

A similar research experiment on the use of global positioning system (GPS) had successfully been published in 2014 [1]. In this paper, the research was continued by combining radio-frequency identification (RFID) and GPS in order to get better human tracking in both indoor and outdoor area. For indoor tracking, an RFID tag was carried by a user and continually read whenever he/she accessed a room while GPS was used mainly when the user was staying outdoor. GPS would be automatically activated whenever the user leaved the room 3 meters away. The accuracy of this tracking was 100% and the GPS could allocate the user every 3.27 meters. Thus this application is suitable to track the human position for both indoor and outdoor.