DEAR DR. ROACH: I see smart watches that are advertised to measure heart rates, oxygen saturation, blood pressure, and even glucose levels. Are these things accurate? -- A.K. ANSWER: The quality of ...

Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings. When you purchase through links on our site, we may earn ...

Smartwatches are great for noticing heart health trends, but a Maryland doctor says users need to understands the technology’s limits and shortfalls and when a visit to your doctor may be needed.

Computer Science and Engineering Ph.D. student Nayan Bhatia demonstrates Pulse-Fi, technology that uses WiFi signals to measure a person's heart rate. Heart rate is one of the most basic and important ...

Heart rate is one of the most basic and important indicators of health, providing a snapshot into a person’s physical activity, stress and anxiety, hydration level, and more. Traditionally, measuring ...