March 15, 2012 Sleep, code, eat, travel. Repeat. The Apple Watch and Microsoft Band use optical sensors to measure heart rate. The Jawbone Up3, which instead tracks your… CONTINUE READING
March 15, 2012 Breathing under the hood, dry water & sands The Apple Watch and Microsoft Band use optical sensors to measure heart rate. The Jawbone Up3, which instead tracks your… CONTINUE READING