I saw reports of this 2 years ago now it’s even worst. This needs to be banned
This kind of tech has been floating around the research world of smart home tech for over a decade now. Various forms of EM deflection and field deviation modeling have been used to be headcount sensors, gesture sensors, and body position modeling. Yup, it’s out there. Normally, it takes multiple antennas in particular positions to work, so it’s still a more controlled space kind of thing than the whole world. That said, it’s possible to do, so head’s up, we’re in for a rough ride going forward on the privacy and monitoring fronts.
It’s a good time to invest in room-sized faraday cages.
Here’s the original publication for those wanting more implementation details.
Three Wi-Fi routers are placed in a room.
I’d be interested to know how well this works if there aren’t 3 (!) hotspots in 1 (!) room. If that is a hard requirement for it to work accurately, I don’t see many applications for this technology. At least not in its current version.
I agree although presumably when you add more devices and types of signal you can build a much richer picture without 3 access points.
For example, in my living room I have a cordless landline, Bluetooth soundbar speaker, WiFi access point, a fixed media box that uses WiFi. Presumably you could build a picture from the interference patterns of these different types of device, which are all on similar frequencies (2.4GHz ish).
Research from a few years ago was able to measure gait (so a person’s height and build etc) from the wifi shadow of a single router.
I assume 3 is to get the super accurate placement.
I guess it’s time to paint the walls with RF shielding paint.
Biometric pictures? A problem? How about a biometric wlan-snap?
Tinfoil hat fixes this!
