Recent comments in /f/gadgets

myalt08831 t1_ivaqqmo wrote

They can triangulate the location of wireless devices without line of sight, by repeatedly measuring 1-dimensional distance data and sampling from multiple measuring locations. Kinda like how GPS works. The data is positioning only, and indirectly/approximately derived.

I wouldn't call that "seeing through walls" as if it's an x-ray camera. I might say "it can see the 3d position of wireless devices through walls, but no visuals, it can just see the spots the things are at."

They can also reverse-engineer what the device is likely to be, by cross-referencing its unique MAC address with the manufacturer that has reserved those addresses. So, something by Apple is probably a computing device or an AirPort router or whatever.

I dunno, man, this headline feels way too hyped up. A persistent person could definitely profile where stuff is in your building, but that's a hell of a lot of effort to case a joint than just traditional means, IMO. Sounds like the kind of stuff only spies would care about, or organized crime maybe.

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FictitiousThreat t1_ivaceln wrote

I don’t know why this is being down voted. India is as corrupt as the mafia. You can do anything you want as long as you pay off the right government official. That’s why their environment is so screwed up – – they have regulations against pollution but they’re not enforced and differ from region to region. What sense does that make, when we all have to share the same water and air?

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somerandomii t1_ivaa306 wrote

Well water reacts particularly well, and we’re mostly water. So it can be used to track people inside a building fairly well. And because wifi is providing the “active” part of this active scanner, it can be done very covertly. It would be hard to detect that someone is monitoring your building.

But that isn’t what this article is about.

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popejubal t1_iva5dm2 wrote

June 28, 2009 - the date of Stephen Hawkins’s time travel party. It’s a shame that the dates were the same. Time travelers all were unable to attend the party because they had to be in time court on that day.

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