Tracking system comprising: - at least one light source, which is designed to broadcast a unique identification information item associated with the light source using a light signal; and - a mobile communication unit having a camera, wherein the mobile communication unit is designed to receive with the aid of its camera the identification information item broadcast by the at least one light source; characterized in that the tracking system also comprises: - at least one light sensor with a camera; - a central control unit which is at least coupled to the at least one light sensor; - wherein upon receipt of the identification information item, the mobile communication unit is further designed to broadcast an activation signal (LID1') to the central control unit for activating a tracking operation, the activation signal (LID1') comprising data correlated with the received identification information item; - wherein the central control unit is designed to determine, on the basis of the activation signal (LID1') transmitted by the mobile communication unit, at which position the mobile communication unit is arranged and which at least one light sensor is arranged relative to the position of the mobile communication unit in such a way that the mobile communication unit can be detected by the camera of said light sensor, wherein the central control unit is furthermore designed to activate the camera of the at least one detected light sensor for providing image information by means of its camera to the central control unit, in order to determine and identify a carrier of the mobile communication unit at the determined position; - wherein the central control unit is further designed to activate at least one light sensor which is coupled to said central control unit for tracking the identified carrier of the mobile communication unit. - at least one light source, which is designed to broadcast a unique identification information item associated with the light source using a light signal; and - a mobile communication unit having a camera, wherein the mobile communication unit is designed to receive with the aid of its camera the identification information item broadcast by the at least one light source; - at least one light sensor with a camera; - a central control unit which is at least coupled to the at least one light sensor; - wherein upon receipt of the identification information item, the mobile communication unit is further designed to broadcast an activation signal (LID1') to the central control unit for activating a tracking operation, the activation signal (LID1') comprising data correlated with the received identification information item; - wherein the central control unit is designed to determine, on the basis of the activation signal (LID1') transmitted by the mobile communication unit, at which position the mobile communication unit is arranged and which at least one light sensor is arranged relative to the position of the mobile communication unit in such a way that the mobile communication unit can be detected by the camera of said light sensor, wherein the central control unit is furthermore designed to activate the camera of the at least one detected light sensor for providing image information by means of its camera to the central control unit, in order to determine and identify a carrier of the mobile communication unit at the determined position; - wherein the central control unit is further designed to activate at least one light sensor which is coupled to said central control unit for tracking the identified carrier of the mobile communication unit.