The Beddit 3 Sleep Monitor, which can be purchased from Apple for $150, is a thin, flexible sensor that’s designed to be placed under the sheet on the top of a mattress. It collects and analyzes sleep-related data like sleep time and efficiency, heart rate, respiration, movement, snoring, room temperature, and room humidity.
All of the data collected by the Beddit Sleep Monitor is then made available to iPhone users through an accompanying Beddit iPhone app, which provides “personalized insights” and “customizable sleep coaching” to help users improve their sleep habits.
According to the Beddit website, the device uses ballistocardiography (BCG) to measure the mechanical activity of the heart, lungs, and other body functions. When the heart beats, for example, the Beddit sensor can measure the mechanical impulse generated by the acceleration of the blood through the circulatory system.
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