SPIRIT Navigation has demonstrated indoor inertial navigation at Mobile World Congress.
This infrastructure-free indoor navigation software uses inertial sensors, Wi-Fi fingerprinting, geomagnetic fingerprinting and map matching. During our quick test in the Mobile World Congress hall the software provided a decent result.The engine - currently in beta version - is expected to be commercially released for Android at the end of 2014. SPIRIT Navigation is a subsidiary of SPIRIT, a Russian group of companies that most notably provide VoIP services to worldwide customers.
gpsbusinessnews.com