WLAN routers ensure that smartphones, tablets, etc. are connected to the Internet. In the future, however, the devices could also help identify respiratory diseases such as asthma, pneumonia or chronic obstructive pulmonary disease. Researchers in the US use the radio signals emitted by the router.
WiFi routers constantly emit radio frequencies that our smartphones, tablets and notebooks receive and use to get us online. Along the way, the invisible frequencies bounce off everything around them – on walls, furniture, and us too. Our movements, even our breathing, change the path of the signal from the router to the device in question, but without interrupting the Internet connection.
Source: Krone
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