RFID based indoor location determination for elderly tracking

There are many video camera based systems proposed for tracking elderly or impaired people. When privacy become a concern, researchers start to search for alternative ways. Many of them, studied on RFID systems to be able to make estimations related to the tracked person. Existing RFID location determination systems cannot provide acceptable results because of the multipath fading and shadowing effects. These systems, which are based on tracking the tag worn by the person, does not operate consistently enough in indoor environments like houses. Human body, which is majorly formed by water, causes tags to be shadowed and hence make the systems not able to receive signal from these tags as the person passes nearby. The method we propose makes location determination using shadowing effect which appears to be a problem for other systems.