Live data from Hacker News

WiFi could become an invisible mass surveillance system

scitechdaily.com

131–140 of 199 posts

Re: WiFi could become an invisible mass surveillance system

#131

Earlier quoted context omitted.

> Even Xfinity has motion detection in homes using this technique now WiFi presence detection is a completely different problem. If the WiFi environment is changing past a threshold, return a boolean yes or no. It can't actually tell if someone is present or if the environment is just changing, such as a car driving close enough to reflect signals back in a certain way. Doing mass surveillance where you detect indivi…

You'll have to explain that a bit more. Isn't the threshold detection analyzing radio signal data? For identifying people, you don't need to reconstruct their face or fingerpring using that data. you just need to fingerprint them. With gait analysis for example, it's only looking at a handful of data points, the way we walk is very unique. lip-reading, i can see how that's a stretch, but out movement patterns and gai…

Insufficient granularity of data

Re: WiFi could become an invisible mass surveillance system

#136

Earlier quoted context omitted.

Exactly. All of these stories using WiFi to detect things with high accuracy are just extreme machine learning demos. Given a tightly controlled environment and enough training data, you can use a lot of things as sensors. These techniques are not useful for general purpose sensing, though. The WiFi router in your home isn't useful for this.

today's tech demos are tomorrow's everyday

Exactly. People are wrong to dismiss this as they're doing in this thread.

LLMs were useless back in 2021.

Re: WiFi could become an invisible mass surveillance system

#137

Earlier quoted context omitted.

Unless they start storing data about your specific gait & posture, skull shape, limb dimensions and build up a "fingerprint" of your body.

You mean like those scanners at the airport?

Please submit full body 3D scan for verification, otherwise discord will lock you to the "kids only" section and mock you mercilessly.
Post reply on HN