In every night, in order to use the pillow, placing it on your bed, ensuring the embedded sensors align with your neck for accurate measurement. Connect the pillow to a mobile application on smart phone or computer via Bluetooth, and once the sensor detects heart beat, the companion app begins monitoring. Lie down comfortably, and the sensors will automatically collect real-time data on your heart rate and other vital signs throughout the night. At the same time, if there is any abnormal patterns of the data, the monitor device will immediately alerting, contacting families, and calling ambulance.