101–110 of 180 posts
In a 5-4 decision in https://en.wikipedia.org/wiki/Kyllo_v._United_States , the SCOTUS determined that police can't use thermal imaging on a house without a search warrant. I wonder what the vote would have been if the justices could have seen videos like this.
I would like to get more research of this sort. Would someone kindly point me towards it? Thanks.
I built and extended this for a college project years ago: https://ocw.mit.edu/resources/res-ll-003-build-a-small-radar... It's not a bad place to start. And cheap if you want to build your own too (some third party even sells the "cantennas" so you don't have to fiddle with tuning that part (which is kind of infeasible without a network analyzer anyway)).
I would like to get more research of this sort. Would someone kindly point me towards it? Thanks.
A good place to start would be the paper's references.
Will go through references too :)
I wonder how similar it is to the tech used in this paper on gesture recognition through walls: http://wisee.cs.washington.edu [2013]
In layman's terms this system is more like a conventional camera but working in the radio spectrum whereas Wisee is like a microphone that can pick up changes in frequencies around it.
Finally, a legit purpose for my tinfoil hat!
I know you're joking, but that's an interesting idea... I wonder how would the system "see" your head then? Unless it is trained on people wearing tinfoil hats (and aluminium suits) it might produce interesting results.
I've noticed, recently, that literally every major chain store I go into blocks my cell signal. I get full bars outside, perfect LTE, and about 5 ft past the glass doors, I'm suddenly cut off. Specifically, Meijer grocery stores and Home Depot are the worst offenders. Coincidentally they offer free in store WiFi to track me with, so I turn off my wifi radio on both smartphone and smartwatch before walking in the door…
I've noticed this, but my thought is that it is just the natural faraday cage created by having a cement building filled with metal shelves. Combine that with towers transitioning to use LTE over 3G and you get reduced coverage indoors in large buildings.
Earlier quoted context omitted.
FWIW, if they are intentionally (or unintentionally) blocking your cell signal with an electronic signal (And since you mentioned that they didn't remodel, this is the only way they could feasibly do it), they're breaking a very serious FCC law - https://www.fcc.gov/general/jammer-enforcement . I know that the FCC is kind of regarded as a joke lately, but this is a law they take pretty seriously as jammers can interf…
Yeah, I think it's more what lgats suggested, and simply that they have a naturally impermeable building in the middle. Not even the cabinets, more the metal shelving up to the ceiling and such. I also notice that my current phone does a terrible job of falling back on the much more long distance 3G, so maybe that's part of it.
That kind of contradicts the OP... since they said that it was only recently that the signal stopped working, and that the building was not being remodeled during that time. So if the building is now impenetrable then something changed. Maybe modern phones just have a horrible time falling back from LTE to 4G/3G.. But if that’s the case then I feel like the OP would have checked for that since he seems to have already been tracking his connection strength over different locations and over time.
Earlier quoted context omitted.
It's a rather unfortunate coincidence, isn't it? Certainly it's not their fault that their buildings just happen to be constructed in such a way, and their products arranged such that it blocks signal causing customers to not be able to compare prices and have to use their approved internet connection. /s I see this in the Targets in my town. I just expect signal to drop to zero.
My Lowe's and Home Depot both have free Wifi. I use it all the time to use their app or site to find the location of items in store (obv. can't talk to humans).
With this paper our last shreds of privacy are being taken away, but they presented the news with nice background music, so there's that.
I've noticed, recently, that literally every major chain store I go into blocks my cell signal. I get full bars outside, perfect LTE, and about 5 ft past the glass doors, I'm suddenly cut off. Specifically, Meijer grocery stores and Home Depot are the worst offenders. Coincidentally they offer free in store WiFi to track me with, so I turn off my wifi radio on both smartphone and smartwatch before walking in the door…
Back in college the engineering building used metal plates as the outside facade, combined with concrete construction. It had a side effect of getting rid of any cell phone reception as a result, unless you were beside a window. The building was built before 2G cell phone service was a thing, so it wasn't an intentional thing.