A wireless transceiver system, comprising: a master unit; a plurality of coverage antennas in communication with the master unit; and a plurality of sensors, characterized in that: each sensor of the plurality of sensors is coupled to a respective coverage antenna of the plurality of coverage antennas; each sensor of the plurality of sensors includes receiver circuitry configured for capturing RF signals from mobile devices and a controller; the plurality of sensors are configured for using the RF signals from at least one mobile device of the mobile devices captured by the receiver circuitry in communication with the controller, the controller being arranged to determine proximity information for the at least one mobile device of the mobile devices in the wireless transceiver system, wherein the proximity information describes the proximity of the at least one mobile device of the mobile devices in relation to the plurality of sensors; the receiver circuitry of each sensor of the plurality of sensors including an RF receiver coupled to a respective coverage antenna and operable to receive RF signals from at least one mobile device of the mobile devices. a master unit; a plurality of coverage antennas in communication with the master unit; and a plurality of sensors, characterized in that: each sensor of the plurality of sensors is coupled to a respective coverage antenna of the plurality of coverage antennas; each sensor of the plurality of sensors includes receiver circuitry configured for capturing RF signals from mobile devices and a controller; the plurality of sensors are configured for using the RF signals from at least one mobile device of the mobile devices captured by the receiver circuitry in communication with the controller, the controller being arranged to determine proximity information for the at least one mobile device of the mobile devices in the wireless transceiver system, wherein the proximity information describes the proximity of the at least one mobile device of the mobile devices in relation to the plurality of sensors; the receiver circuitry of each sensor of the plurality of sensors including an RF receiver coupled to a respective coverage antenna and operable to receive RF signals from at least one mobile device of the mobile devices. each sensor of the plurality of sensors is coupled to a respective coverage antenna of the plurality of coverage antennas; each sensor of the plurality of sensors includes receiver circuitry configured for capturing RF signals from mobile devices and a controller; the plurality of sensors are configured for using the RF signals from at least one mobile device of the mobile devices captured by the receiver circuitry in communication with the controller, the controller being arranged to determine proximity information for the at least one mobile device of the mobile devices in the wireless transceiver system, wherein the proximity information describes the proximity of the at least one mobile device of the mobile devices in relation to the plurality of sensors; the receiver circuitry of each sensor of the plurality of sensors including an RF receiver coupled to a respective coverage antenna and operable to receive RF signals from at least one mobile device of the mobile devices.