That ability is also somewhat overstated, they need a lot more information about your house than most people have and they need to be in range of your WiFi. Though the first part has become less of an issue with ML/AI.
More importantly though there is no reason to do that when there is already specialized equipment specifically for tracking objects through obstacles that can’t be thwarted by you turning off your router. Starting with things like IR cameras and moving up to the latest cutting edge imaging systems.
I can’t find it now but I saw a video of a system like this being used in the field in Iraq ~20 years ago.
Replace the bags on the cameras with faraday bags/cages. No damage to property, but no signal in or out. Slap a high voltage sign on it to make anyone who wants to remove it hesitate a bit.
Wifi can be used to detect a persons location in a room and the layout of the room. I’m sure this can be applied to almost any radio signal.
EDIT: Also coupled with gait analysis, they can still track movements of specific people potentially by audio alone.
The resolution is likely limited by the wavelength of the signal.
A 5GHz radio has about a 55mm wavelength. At the top of the 6E/7 spectrum that shoots down to about 42mm.
Broadcast Radio (87-108MHz) has a wavelength of 2.7m.
I don’t see how a lower frequency signal could be of significant use for modeling 3d objects.
Well okay mister science man you got me. Thanks for the explainer, for real though. That does make sense.
That ability is also somewhat overstated, they need a lot more information about your house than most people have and they need to be in range of your WiFi. Though the first part has become less of an issue with ML/AI.
More importantly though there is no reason to do that when there is already specialized equipment specifically for tracking objects through obstacles that can’t be thwarted by you turning off your router. Starting with things like IR cameras and moving up to the latest cutting edge imaging systems.
I can’t find it now but I saw a video of a system like this being used in the field in Iraq ~20 years ago.
Replace the bags on the cameras with faraday bags/cages. No damage to property, but no signal in or out. Slap a high voltage sign on it to make anyone who wants to remove it hesitate a bit.