On the last granted patent day of 2020, the U.S. Patent and Trademark Office officially granted Apple a patent for Apple's advanced 'Fall Detection' system for Apple Watch that could send ECG data to emergency services.

Apple's first "Fall Detection" patent application surfaced back in April 2019. Then came a couple of stories that illustrated the value of having such a feature on Apple Watch in late June involving a car accident and then again in late September involving a biking accident. 

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Apple updated their fall detection system to add the ability to communicate ECG data of a user to emergency services that wasn't available in the original Apple Watch feature of 2018.

Apple's granted patent states that "Health metrics that may be computed using the electrodes include, without limitation, heart functions (ECG, EKG), water content, body-fat ratios, galvanic skin resistance, and combinations thereof."

Apple's patent FIG. 1 below illustrates a simplified block diagram illustrating an example flow for providing audio looping techniques. FIG. 2 is another simplified block diagram illustrating another example flow for providing audio looping techniques.

For more details you could review our original patent application report or Apple's granted patent 10,878,683 for finer details.