71–80 of 192 posts
We produce high-end FMCW radars (http://dopplerradars.com) and I have been looking for ways to align us more with Tech and less with Defense.
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(Genuinely curious) how do you know this?
i recall a comment by someone claiming to be working in an antarctic base- everyone working outside would be wearing the same suit, but you could subconsciously recognize who you were looking at, at great distances, simply by the gait. walk without rhythm ...
> Because mmWave radar doesn’t process visual light, what it sees is not personally identifiable. This makes it an ideal choice for monitoring where a camera would not be appropriate. Is 5mm resolution not enough to identify a face? What’s the difference between a 3d model of a person constructed from high res radar and a black and white photo? The radar sounds even more identifiable. Edit: Couldn’t you construct a m…
Each time something comes up like this, I call for jammers. If someone wishes to exploit the shared physics of the environment, I'll have no qualms to do the same.
> This work explores the possibility of countering CSI based localization with an active device that, instead of jamming signals to avoid that a malicious receiver exploits CSI information to locate a person, superimpose on frames a copy of the same frame signal whose goal is not destroying reception as in jamming, but only obfuscate the location-relevant information carried by the CSI. A prototype implementation and early results look promising;
> Because mmWave radar doesn’t process visual light, what it sees is not personally identifiable. With machine learning improvements, identification and more are possible. From a 2021 paper on IEEE 802.11bf Wi-Fi Sensing, https://arxiv.org/pdf/2103.14918.pdf > Indeed, it has been shown that SENS-based classifiers can infer privacy-critical information such as keyboard typing, gesture recognition and activity tracking…
Hm, I the EU due to GDPR this services are required to make you opt in to them. Does that mean many of this applications are outright illegal in the EU, due to not having a good way to handle the case where the user doesn't opt-in?
Most spying on users through websites etc. doesn't fall under it do it being formulated in the pre-internet age.
But would WIFI-7 enabled routers fall under it? It's not complete unrealistic that it might happen.
The think is this law is rather strict in how illegal spy devices are to be handled => destructive disposal. (Required, by anyone owning such a device).
That could be quite a big fall out.
This law did hit some IoT devices, like some toys with integrated voice recording.
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Right on. The whole "mm wave radar is detail rich but gives privacy" line is a contradiction. Any data that is detailed enough to be useful is detailed enough to be a privacy concern. While it might not be the same as leaking nude photos from someone's camera, radar data is something that needs to be carefully thought out. Radar data from a car can provide information about people's driving behavior even without loca…
My main point is the data is anonymous at source. I think having control over how that data is correlated back to an individual is important
The basic idea is your phone becomes your life coach.
This "privacy protecting" radar (which does not seem privacy protecting at all, just avoids leaking images which is just bad PR avoidance) looks like the same direction.
A technical error in one of the diagrams: Hall effect sensors are not binary, but one-dimensional, and are used so; their output voltage is directly proportional to the magnetic field strength. As for PIR sensors, fundamentally they’re certainly not binary, but I have no idea if they perhaps expose only a binary signal. A better example of a binary sensor might be an on/off switch.
thats a good point about the hall sensors. i'll update that. PIR sensors also output an analog signal, but in practice they are binary.
A technical error in one of the diagrams: Hall effect sensors are not binary, but one-dimensional, and are used so; their output voltage is directly proportional to the magnetic field strength. As for PIR sensors, fundamentally they’re certainly not binary, but I have no idea if they perhaps expose only a binary signal. A better example of a binary sensor might be an on/off switch.
the only true binary sensor i can think of are good old fashioned mechanical switches.
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What about correlation? If you have other information that can tell you who is alone in the bathroom (common area CCTV, log of RFID key usage, etc) and your radar can infer that something very private is taking place there because the person thinks they are alone, then isn't that still a huge breach of privacy?
I really must have phrased my message more clearly. I meant reconstructing images, not identifying who is inside. The latter is quite feasible, and you're correct that extra data helps with that as well. Just like with browser pinning, we have a variety of signals, which combined together give a very high rate of correct identification.
> Because mmWave radar doesn’t process visual light, what it sees is not personally identifiable. This makes it an ideal choice for monitoring where a camera would not be appropriate. Is 5mm resolution not enough to identify a face? What’s the difference between a 3d model of a person constructed from high res radar and a black and white photo? The radar sounds even more identifiable. Edit: Couldn’t you construct a m…
You don't need to identify a face; you can identify people by Gait. If you can resolve something as big as a leg you've got enough, as long as you have it over 10 seconds or so.