WiFi sensing may also usher in new forms of monitoring. With its longer wavelengths, Wi-Fi could cover more ground than millimeter-wave radar.
Meanwhile, AI advances that are helping Wi-Fi sensing improve are also helping radar. Some of the uses that made Wi-Fi sensing exciting a decade ago are now commercially available with dedicated radar devices that use shorter wavelengths.
It’s a tantalizing idea: that the same routers bringing you the internet could also detect your movements. “It’s like this North Star for everything ambient sensing,” says Sam Yang, who runs the health-sensor startup Xandar Kardian. For a while, he says, “investors just flocked in.”
Source: https://www.technologyreview.com/