Abstract: An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined via offline calibration. Automated maintenance and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for generating spatially-dependent path-loss models are disclosed.

Abstract: An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined during offline calibration. Automated creation, maintenance, and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for generating spatially-dependent path-loss models are disclosed.

Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.

Abstract: Systems and methods to track a device in an indoor environment having polygonal obstructions are disclosed.

Abstract: An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined via offline calibration. Automated maintenance and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for updating a signal strength database are disclosed. In one variation, a computer-implemented method of discovering a new or moved wireless access point (AP) within an indoor environment involves flagging one of the wireless APs as the new or moved AP; determining a location of the new or moved AP using information from at least one of an installation log and an AP location solver; determining transmit strengths and estimated received signal strengths of signals transmitted from calibration reference points (RPs) to the AP using a spatially-dependent path-loss model; and adding the transmit strengths and estimated received signal strengths to the signal strength database.

Abstract: Systems and methods to track a device in an indoor environment having polygonal obstructions are disclosed.

Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.

Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.

Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.

Abstract: Systems and methods to track a device in an indoor environment having polygonal obstructions are disclosed.

Abstract: A database of Wi-Fi access point location data is built from (a) provisioning data; (b) GPS location estimates; and (c) inferred location estimates.