InDooRatlas:Geomagnetic Field InDooRatlas is a moving map application that uses geomagnetism for indoor navigation by identifying the unique geomagnetism of each location on Earth for positioning, and it can even work in areas where there is no wireless signal.

InDooRatlas is a project of the University of Oulu, Finland. InDooRatlas is a mobile mapping application developed by a research team at the University of Oulu in Finland that can help users navigate indoors by identifying the geomagnetism of different locations. indoorAtlas works by identifying the unique geomagnetism of each location on Earth for positioning, and it can even work in areas where there is no wireless signal.

The reinforced concrete structures of modern buildings can cause localized disturbances to the geomagnetic field, and the compass may be affected by this. In principle, a non-uniform magnetic field environment will produce different magnetic field observations depending on its path. Every building, every floor, and even every corner of the earth has a different geomagnetic field. Because of this, they can be located by detecting their geomagnetic fields.

The research team has completed testing in a 4,593-foot-deep (1,380 meters) cave, and the application is working well. And the application runs in the building in the precise range of 0.1 m-2 m; users do not need to install other supporting software and hardware can be used, but also with other map applications to obtain more accurate location information.

Currently, IndoorAtlas is available for Android and iPhone, and has an open API; it is expected to be available on other platforms soon. However, the team said IndoorAtlas is just getting started, and developers need to make more improvements.