Physical surveillance over wifi is an IEEE standard: 802.11 bf - WiFi sensing [1].

With gait analysis [2] you can determine who is in the area and with enough photos or videos of that person you can reconstruct an accurate video of them.

You can also reconstruct audio just from video and possibly even via 802.11bf or similar eventually [3].

The surveillance stack is deep.

1. https://www.nist.gov/publications/ieee-80211bf-enabling-widespread-adoption-wi-fi-sensing

2. https://www.nature.com/articles/s41598-022-18806-4

3. https://news.mit.edu/2014/algorithm-recovers-speech-from-vibrations-0804

#privacy #wifi