This is not (completely) new. 2019 paper entitled "Passive Radar based on 802.11ac Signals for Indoor Object Detection": * https://ieeexplore.ieee.org/document

This is not (completely) new. 2019 paper entitled "Passive Radar based on 802.11ac Signals for Indoor Object Detection": * https://ieeexplore.ieee.org/document/8904842 https://ieeexplore.ieee.org/document/8904842 There is an IEEE Working Group to create an extension for 'active radar': > IEEE 802.11bf will enable stations to inform other stations of their WLAN sensing capabilities and request and set up transmissions that allow for WLAN sensing measurements to be performed, among other features. WLAN sensing makes use of received WLAN signals to detect features of an intended target in a given environment. The technology can measure range, velocity, and angular information; detect motion, presence, or proximity; detect objects, people, and animals; and be used in rooms, houses, cars, and enterprise environments. The targeted frequency bands are between 1 GHz and 7.125 GHz (MAC/PHY service interface) and above 45 GHz (MAC/PHY). * https://standards.ieee.org/beyond-standards/ieee-802-11bf-aims-to-enable-a-new-application-of-wlan-technology-wlan-sensing/ https://standards.ieee.org/beyond-standards/ieee-802-11bf-ai... Presentation on the extension and Wi-Fi sensing: * https://www.youtube.com/watch?v=I3GmgO9biH87&t=5m10s https://www.youtube.com/watch?v=I3GmgO9biH87&t=5m10s