Abstract: A monitor system is provided for detection of the movement and position of a sleeping infant. The system includes an infrared detector, a station for receiving signals from the detector, and a garment to be worn by an infant provided with infrared reflectors. The reflectors create positional markers for detection by the detector. The detector sends signals to the receiving station based on the position of the reflectors on the garment worn by the infant. The station including alarms representative of the predetermined signals received from the detector.