Comment by jml7c5

The term for this sort of thing is "WiFi sensing". Relevant HN thread from 2021 ("The next big Wi-Fi standard is for sensing, not communication (2021)"): https://news.ycombinator.com/item?id=29901587

As far as I can tell, devices were already on the market when that thread was made. 802.11bf was standardization to help along interoperability and future products.