Wi-Fi could help identify when you're struggling to breathe

Wi-Fi routers continuously broadcast radio frequencies that your phones, tablets and computers pick up and use to get you online. As the invisible frequencies travel, they bounce off or pass through everything around them—the walls, the furniture and even you. Your movements, even breathing, slightly alter the signal's path from the router to your device.

from Tech Xplore - electronic gadgets, technology advances and research news https://techxplore.com/news/2022-12-wi-fi-youre-struggling.html