A light fixture (110, 111, 112, 113, 202) comprising: a sensor unit and a light intensity controller; wherein the sensor unit comprises; a sensor (241, 242, 243, 244, 245), the sensor (241, 242, 243, 244, 245) operative to generate a sensed signal based on at least one of sensed motion or light; a wireless communication circuitry, the wireless communication circuitry operative to maintain a link with a network; a controller, the controller operative to: manage communication with the network; manage reception of beacons from a mobile object through the wireless communication circuitry, wherein the beacons include information associated with the mobile object; wherein the information associated with the mobile object includes a transmission power of the beacons; and the received beacons indicate whether acceleration of the mobile object has been sensed; generate dimming control based on at least one of the sensed signal and a communication from the network; and wherein the light intensity controller is configured to receive the dimming control and operative to adjust an emitted light intensity of a luminaire of the light fixture (110, 111, 112, 113, 202); wherein the light fixture (110, 111, 112, 113, 202) is operative to determine a received signal strength indicator, RSSI, of the received beacons, and wherein the controller is operative to estimate a distance between the light fixture (110, 111, 112, 113, 202) and the mobile object based on the RSSI of the received beacons and the transmission power of the beacons; and wherein the information associated with the mobile object includes sensed motion of the mobile object, wherein the sensed motion includes sensed acceleration of the mobile object; and wherein the sensed acceleration includes a magnitude and direction of acceleration of the mobile object along one or more directions, wherein the controller is further operative to detect an orientation of the mobile object at rest and a direction and a magnitude of movement of the mobile object based on the magnitude and direction of the acceleration of the mobile object along one or more directions, and wherein the orientation of the mobile object is used to interpret the RSSI. a sensor unit and a light intensity controller; wherein the sensor unit comprises; a sensor (241, 242, 243, 244, 245), the sensor (241, 242, 243, 244, 245) operative to generate a sensed signal based on at least one of sensed motion or light; a wireless communication circuitry, the wireless communication circuitry operative to maintain a link with a network; a controller, the controller operative to: manage communication with the network; manage reception of beacons from a mobile object through the wireless communication circuitry, wherein the beacons include information associated with the mobile object; the sensor unit comprises; a sensor (241, 242, 243, 244, 245), the sensor (241, 242, 243, 244, 245) operative to generate a sensed signal based on at least one of sensed motion or light; a wireless communication circuitry, the wireless communication circuitry operative to maintain a link with a network; a controller, the controller operative to: manage communication with the network; manage reception of beacons from a mobile object through the wireless communication circuitry, wherein the beacons include information associated with the mobile object; manage communication with the network; manage reception of beacons from a mobile object through the wireless communication circuitry, wherein the beacons include information associated with the mobile object; wherein the information associated with the mobile object includes a transmission power of the beacons; and the received beacons indicate whether acceleration of the mobile object has been sensed; generate dimming control based on at least one of the sensed signal and a communication from the network; and wherein the light intensity controller is configured to receive the dimming control and operative to adjust an emitted light intensity of a luminaire of the light fixture (110, 111, 112, 113, 202); generate dimming control based on at least one of the sensed signal and a communication from the network; and wherein the light intensity controller is configured to receive the dimming control and operative to adjust an emitted light intensity of a luminaire of the light fixture (110, 111, 112, 113, 202); wherein the light fixture (110, 111, 112, 113, 202) is operative to determine a received signal strength indicator, RSSI, of the received beacons, and wherein the controller is operative to estimate a distance between the light fixture (110, 111, 112, 113, 202) and the mobile object based on the RSSI of the received beacons and the transmission power of the beacons; and wherein the information associated with the mobile object includes sensed motion of the mobile object, wherein the sensed motion includes sensed acceleration of the mobile object; and wherein the sensed acceleration includes a magnitude and direction of acceleration of the mobile object along one or more directions, wherein the controller is further operative to detect an orientation of the mobile object at rest and a direction and a magnitude of movement of the mobile object based on the magnitude and direction of the acceleration of the mobile object along one or more directions, and wherein the orientation of the mobile object is used to interpret the RSSI.