Date Added: Jun 2011
Mobile penetration in India has reached 66.20% with a subscriber base of 826.93 million mobile phone subscribers as of April 2011. Besides ubiquitous access, a Mobile Device is useful for getting connected to world wide information through internet and for entertainment applications but there are much powerful applications available in mobile devices that are sparingly used. Location tracking is one of the killer applications available on the mobile devices. Numerous GPS-based tracking systems have been successfully deployed and utilized in various applications such as vehicles location identification and in route guidance but for indoor and closed environments, it becomes difficult to track the accurate position with GPS system.