Asset Tracking System helps the items stay in the desired locations by tracking the location of the fixed and moving items. It also performs the inventory counts. By this system, items that are critical for diagnosis, treatment or emergency interventions, as well as fixtures, assets and any other items can be easily tracked and controlled. Asset tracking is handled with two ways. Active tracking and passive tracking. In active tracking, the CALLVISION Active Tag device is attached to the moving items. This device transmits instant location information to CALLVISION RF Location Scanners. If Active Label is removed, it sends a warning to the system. Battery powered Active Tags do not need to change batteries for a long time thanks to their low energy consumption. The system warns when the batteries are about to run out. In passive tracking, passive RFID tags are attached to the items. The items tagged are identified on the rooms/spaces with the CALLVISION Handheld Terminal device. When a count is started, the authorized personnel point the Hand Terminal device from the door of the room towards the room and shows it around. By the RFID system, the items in the room, the items that should be in the room but not in the room, and the items found in the room when they should be in another room are shown on the Hand Terminal screen. The same information can be accessed from the C4S system. In addition, in passive RFID tracking, reader antennas are placed at the exit doors of the hospital to provide a warning in case of theft. This prevents the tagged devices out of hospital.