Scientists in Germany have demonstrated a startling new form of surveillance: identifying people using nothing more than ordinary WiFi signals. By analyzing how radio waves bounce around a room, researchers can effectively “see” and recognize individuals — even if they are not carrying a device and even if their phone is turned off.
I mean, I obsessively hardwire all my devices, only my phone uses WiFi.
This just gives me a reason to skip using a WiFi Access Point entirely and just routing my phone through my home network via my Wireguard VPN which I already do for adblocking.
Doesn’t help as much if you live in a bunch of cramped apartments and there’s a lot of WiFi around you though.
The AP is what does the tracking. If you build your own, and only you can access it, then it can’t watch you. VPNs don’t solve any of this, it’s not about a device being encrypted or not.