Apple patent involves the heart rate monitor in the Apple Watch Series 4
<p style="white-space: pre-wrap;">The new Apple Watch Series 4 enables customers to take an ECG reading right from the wrist using the new ECG app, which takes advantage of the electrodes built into the Digital Crown and new electrical heart rate sensor in the back crystal. And Apple has been granted a patent (number 10,076,257) for a “seamlessly embedded heart rate monitor” that involves the tech used in the app.</p>