Today, indoor positioning & navigation platforms, particularly smartphone-based indoor navigation platforms, can harness from diverse sources of signals to determine the indoor location of a person or an asset. These sources include infrastructural technologies such as Wi-Fi, bluetooth, beacons, Ultra-wideband (UWB) as well as smartphone-based sensors such as accelerometers, compass (magnetic sensing) and cameras (video sensing).
Below is a compilation of some of the indoor navigation platforms available today: