Buildings have unique spatial magnetic signatures that can be used for indoor positioning
The MapCreator app enables collecting magnetic data from sites where the indoor positioning is to be used
The diagram shows how the mobile app communicaties with the Location Service and the map database
The IndoorAtlas software for mobile devices uses magnetic field anomalies for indoor positioning
While GPS tracking tends to be ineffective inside buildings, alternative indoor positioning solutions require the presence of Wi-Fi network access points or other beacons ... or at least, that was the case before a Finnish start-up called IndoorAtlas stepped onto the scene. Its software uses your phone’s built-in compass and measures the anomalies in the Earth’s magnetic field to pinpoint your location in a building with the accuracy ranging from 0.1 meter to 2 meters (3.93 inches to 6.56 feet). If spiny lobsters can do it, so can we, the logic goes.
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