How can I track indoor locations? [closed]
As far as I know, the only solution for you is to use indoor location fingerprinting. Essentially, you need to map signal strengths on locations for the positions that are known. Whenever a mobile phone is on that location, it should read similar signal strengths from various WiFi antennas. When this reading is compared to fingerprints of the indoor locations, the best match should be the location. Different algorithms can be applied. For further reading I suggest papers like link1 and link2
One appraoch is to tag indoor positions with barcodes defining a location. But this is only as acurate as users scan the barcodes during crossing and scanning the barcodes.
Another approach uses WiFi signal strength. AFAIK CISCO networks are able to give good results with there indoor location services: http://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/wifich1.html
Accurate GPS needs direct line of sight to the satellites. Therefore you cannot track location room by room with current mobile phone technology.