Back in the 1940s, a Dutch physician called John Poel invented a device that changed the nature of heart monitoring. His device is based on the idea that the color of skin changes according to the ...

Non-invasive heart rate and blood pressure monitoring via facial images and video might soon be possible thanks to the development of pioneering signal-processing technologies. Researchers are ...

Most fitness trackers offer a wealth of heart-rate data. Here’s how to make sense of it. By Talya Minsberg If you wear a smartwatch or fitness tracker, you likely already have access to a steady ...