Comment by justaj
4 years ago
With cameras and motion sensors you more or less know how they'll be used and as a user you can choose to disable them (or at the very least block them if you can't disable them).
With this technology, it will be integrated into your router (and clients?), so turning those off will mean to turn off WiFi altogether. Added to that, I'll bet that most people wouldn't even begin to imagine that WiFi could be used for sensing people, and they'll continue using WiFi without being aware for the grave privacy implications.
> With this technology, it will be integrated into your router (and clients?), so turning those off will mean to turn off WiFi altogether.
It's rather unreasonable to think that you won't be able to turn off band on router. Especially given fact that 60Ghz is heavily shielded by _doors_, so any usable router would require fallback 2.4/5/6 Ghz connectivity.
802.11bf Wi-Fi 7 Sensing works with all frequencies, 2.4 and up.
Even if Neighbor 2 turns off their router, Neighbor 1 could passively use the radio waves from Neighbor 3's router to surveil reflections from Neighbor 2, including keyboard typing, heartrate/breathing, location and physical activity.
Previous discussion: https://news.ycombinator.com/item?id=27123493
The problem with this neighbor-spying fear is that "complex math using data from radio waves to sense stuff" is already possible and readily available by anyone willing to study and put in the world of building it, wifi 7 isn't suddenly enabling that part of rf analysis or mathematics.
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There's no reason to assume any of that.