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The prototype system incorporating the custom ASSIST sensors. (Left) Neoprene wrist strap with ABS plastic shell containing the circuitry for measuring ozone concentration, PPG, motion, temperature, and humidity. (Center) Elastomer patch with ABS plastic shell containing circuitry for measuring ECG, skin impedance, PPG, wheezing, and motion. (Right) Handheld spirometer for measuring lung functionality.
