There have been various navigation and tracking systems being developed withthe help of technologies like GPS, GSM, Bluetooth, IR, Wi-Fi and Radar. Outdoorpositioning systems have been deployed quite successfully using GPS butpositioning systems for indoor environments still do not have widespreaddeployment due to various reasons. Most of these use only a single technologyfor positioning but using more than one in cooperation with each other isalways advantageous for obtaining greater accuracy. Particularly, the oneswhich use Bluetooth are better since they would enhance the scalability of sucha system because of the fact that this technology is in use by the commonpeople so it would always be easy to track them. Moreover it would also reducethe hardware installation cost to some extent. The system that has beenintroduced here uses Bluetooth primarily for positioning and tracking incombination with Wi-Fi access points. The reason that makes the commercialapplication of such a system easier and cheaper is that most of the localizedareas today like college campus, offices are being provided with internetconnectivity using these access points.
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