Method and system for locating subjects within a tracking environment

(57) The method and system (10) which trace the target (namely, an object and a person) position within pursuit environment using both the radiofrequency wave frequency (RF) portion of a summary electromagnetic wave spectrum, and an infrared (IR) portion. This system contains the badge (12) based on the microprocessor which operates by the battery for each object which should check a position. Each badge transmits the digitized infrared light signal automatically, in order to give the determination which was excellent in the position of the object. Each badge transmits an RF signal and IR signal on the occasion of starting of the page demand / warning push-button switch (42). This IR signal and RF signal are modulated or coded with badge identification data, a page demand or warning information data, and battery state data. This system contains the ceiling sensor of the form of IR receiver (20) and RF receiver (26) or a wall sensor, and a host computer (36) again. This position check method and system are useful especially in a hospital, in order to monitor the position of a patient and/or important equipment.