Abstract: A system for indoor commercial facilities includes a multiplicity of access points to provide connectivity to mobile communications devices in the facility, a tracking module to determine locations for the devices based on connection data provided by the access points as the devices move through the facility, and an I/O module to receive the connectivity data and to transmit a map of a current location to the devices, where the map is relative to a location as determined by the tracking module. A mobile communications device includes a Wi-Fi transceiver to communicate with a multiplicity of Wi-Fi access points arrayed in a facility, where connection data between the transceiver and the access points is suitable for determining a current location of the device in the facility, and a map display to display a map of at least a part of the facility relative to the current location.