Indoor navigation, that is to say navigation inside enclosed buildings, faces some challenges: GPS signals cannot be received here, because there is no visual contact to GPS satellites. But there are alternatives for indoor positioning, for example via Wi-Fi, beacons or VLC (visible light communication). In our indoor navigation wiki you can find out more about that.
Indoor navigation is especially helpful for a better orientation in complex buildings, such as railway stations, airports, trade fairs and large offices or industry buildings. In most cases, the user installs an app, which compares his position to a map and guides him to a destination – very similar to car navigation systems. The navigation can be enhanced by augmented reality elements and considers the change of floor levels, lifts and stairways. There are 2 methods for indoor positioning of smart devices: client-based and server-based positioning.