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Wireless Network Modded To See Through Walls

CmdrTaco posted more than 4 years ago | from the still-can't-see-through-pants dept.

Privacy 161

KentuckyFC writes "The way radio signals vary in a wireless network can reveal the movement of people behind closed doors, say researchers who have developed a technique called variance-based radio tomographic imaging which processes wireless signals to peer through walls. They've tested the idea with a 34-node wireless network using the IEEE 802.15.4 wireless protocol (the personal area network protocol employed by home automation services such as ZigBee). The researchers say that such a network could be easily distributed by the police or military wanting to determine what's going on inside a building. But such a network, which uses cheap off-the-shelf components, might also be easily deployed by your neighbor or anybody else wanting to monitor movements in your home."

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Kids (4, Funny)

sopssa (1498795) | more than 4 years ago | (#29604743)

wanting to determine what's going on inside a building.

Now when teens want to sneak out at night, they can easily see thru walls if their parents are sleeping!

Re:Kids (5, Funny)

tag (22464) | more than 4 years ago | (#29604793)

And imagine the teens' surprise and horror when they discover their parents aren't "sleeping" at all...

Re:Kids (1, Funny)

Anonymous Coward | more than 4 years ago | (#29604955)

And imagine the parents' surprise when their teens upload them to YouPorn.

Re:Kids (0, Troll)

Lumpy (12016) | more than 4 years ago | (#29605741)

There must be a lot of lame parents that do the super silent wiggle. Even when trying to be quiet my wife and I are loud enough that my 17 year old turns up the stereo at the other end of the house.

Granted most people are dysfunctional and believe that Sex=Icky and there fore lead a very sad life.

back when I was in college, everyone knew, if the windows were open you could hear us for miles on a summer night...

You haven lived life if you have not had wild romper set with a screamer..

Re:Kids (2, Insightful)

Kokuyo (549451) | more than 4 years ago | (#29606013)

While I agree with your last statement, I do have to wonder about your idea of common courtesy. My wife and I usually close the window.

Talking about dysfunctional, though, it seems strange that your kid feels the need to turn up the stereo. I still can not believe that the thought of your own parents having sex is 'icky' to people without something having gone wrong in their sexual upbringing (and I, too, find the thought of my parents having sex 'icky', make no mistake).

In our household, sex is discussed very openly today and I sure as hell won't change that just because kids have taken over the house ;).

Re:Kids (1)

story645 (1278106) | more than 4 years ago | (#29606421)

Talking about dysfunctional, though, it seems strange that your kid feels the need to turn up the stereo.

It's just a matter of boundaries/personal space and intrusiveness. Listening to other people have sex feels voyeuristic, and voyeurism on parents is a level of ick. I prefer my brother's stereo blaring for the same reason when he's fooling around with his gf. (Our beds are on opposite sides of a really pathetic wall.)

Re:Kids (1)

sukotto (122876) | more than 4 years ago | (#29606495)

Do you also celebrate the First of May?
I do and it's awesome

Re:Kids (1)

mcgrew (92797) | more than 4 years ago | (#29605751)

Any teenager who doesn't know his parents fuck has led a truly sheltered life. OTOH imagine the parents' surprise when they find that little Suzy isn't alone in her bedroom.

Re:Kids (0)

Anonymous Coward | more than 4 years ago | (#29604989)

Kids who know how to do that don't sneak out at night, they are called geeks

Re:Kids (4, Funny)

Chrisq (894406) | more than 4 years ago | (#29605023)

Unless they are sneaking out to the local linux kernel developer's symposium.

Re:Kids (2, Interesting)

sopssa (1498795) | more than 4 years ago | (#29605041)

I would think that many of the early hacker culture geeks sneaked out a lot at night - for phone phreaking, to find computer parts etc.

Re:Kids (4, Funny)

MBGMorden (803437) | more than 4 years ago | (#29605239)

Sneaking out at night to find computer parts? Were the parts roaming around in the wilderness at nick back then or something?

Re:Kids (0)

Anonymous Coward | more than 4 years ago | (#29605683)

Someone named 'nick' must have been on your mind. I hate it when that happens.

Re:Kids (4, Interesting)

Lumpy (12016) | more than 4 years ago | (#29605797)

Yes...

Actually buddies of mine weould make a late night pilgramage to Benton Harbor, MI to tresspass on the HeathKit compound to go dumpster diving. WE almost got caught about 8 times. I got enough out of their dumpsters to build my first IBM-XT and a HERO-I robot back in the late 80's.

In fact it was my buddies that started heathkit destroying things they put in the trash. One of them got greedy and started selling the crap we got out of the dumpsters.

Seymour Hersh hinted at this a few years ago (5, Interesting)

mantis2009 (1557343) | more than 4 years ago | (#29605085)

Investigative reporter Seymour Hersh said that the U.S. military had developed a secret new technology for use in urban warfare. He said the technology was revolutionary, equivalent to the first time tanks were deployed on the battlefield. From what I remember, there was speculation that Hersh had learned that the military could now see through walls.

Re:Seymour Hersh hinted at this a few years ago (4, Insightful)

dintech (998802) | more than 4 years ago | (#29605201)

And we're one step closer to Aliens-esque movemnet detector...

Re:Seymour Hersh hinted at this a few years ago (1)

TrippTDF (513419) | more than 4 years ago | (#29605215)

i remember reading that as well. I would be willing to bet their tech is similar to this.

Re:Seymour Hersh hinted at this a few years ago (1)

FooAtWFU (699187) | more than 4 years ago | (#29606671)

No. The US Military had simply discovered Segway personal mobility devices.

Proof Reading?? (0)

Anonymous Coward | more than 4 years ago | (#29605289)

That's ambitious but shoudl they ge ttheir system to the point where it can be used like this it raises another problem: the issue of privacy.
Good job!

Re:Kids - OMG!!! (1)

iCantSpell (1162581) | more than 4 years ago | (#29605607)

So that's what that looks like! I never knew what that sound was before.

Re:Kids (1)

RazzleDazzle (442937) | more than 4 years ago | (#29606877)

More likely imaging the teens' surprise and horror when their parents spill the beans that RFID+GPS tracking units have been surgically implanted on them by the parents. MUAHWAHAWHAWHAHWHAWH!!!! I can haz your breadcrumb trail.

Fake hearts that pump continuously, GPS tracking / RFID, indoor thru wall tracking, nanites in the body, controlling computers directly with your brain, van eck phreaking, life-like cgi and hologram, quantum computing, hmmm... sounds like some of those older "sci-fi" books are going to have to get re-categorized as history books pretty soon.

Fear mongering (5, Funny)

skornenicholas (1360763) | more than 4 years ago | (#29604775)

Went straight for the "everyone is spying on me!" ploy a little quick there. Seriously, if anything my neighbors request to see LESS of my movements. This may be due to the fact that I have a clear shower curtain and my bathroom doors lines up to a big bay window facing the road...took me two months to realize that one.

Re:Fear mongering (1)

sopssa (1498795) | more than 4 years ago | (#29604913)

I have some same kind of experiences too. I live in 16th floor and theres huge window out of the living room. It's a nice view out, but theres other tall building nearly too and you can nicely see inside each other apartments.

Being the comfortable guy that I am, I do however like to spend my time naked while at home (and while posting to slashdot too). They do not need a device to see me; one of the curtains is broken, so theres nothing I can do about it.

Re:Fear mongering (1)

MisterSquid (231834) | more than 4 years ago | (#29605105)

They do not need a device to see me; one of the curtains is broken, so theres nothing I can do about it.

Presuming you rent, take it to management. Hopefully they will care enough to keep the apartment in good condition (I know that's a big if). If you own, get off your duff and fix it, just like you would fix your computer if something went wrong.

Re:Fear mongering (2, Funny)

mrsurb (1484303) | more than 4 years ago | (#29605141)

You owe me a new mind's eye, I had to poke it out to get rid of that mental image.

Re:Fear mongering (1)

ArsenneLupin (766289) | more than 4 years ago | (#29605937)

spend my time naked while at home (and while posting to slashdot too).

or worse, while following links in Slashdot... But wouldn't that be as shocking even if you were fully dressed?

Re:Fear mongering (2, Informative)

Thaelon (250687) | more than 4 years ago | (#29605245)

What, did you shower with your eyes closed?

How do you not realize that you can see the road from the shower if people can see in the shower from the road?

Re:Fear mongering (1)

cicuz (1414125) | more than 4 years ago | (#29606045)

"That's because you're facing the rock, Caboose"

Re:Fear mongering (4, Funny)

TheRaven64 (641858) | more than 4 years ago | (#29606279)

Maybe he only showers every two months?

Tinfoil House (3, Funny)

TyIzaeL (1203354) | more than 4 years ago | (#29604795)

Looks like it is time to get hold of some Aluminum Oxide paint.

Re:Tinfoil House (2, Informative)

pak9rabid (1011935) | more than 4 years ago | (#29604917)

Looks like it is time to get hold of some Aluminum Oxide paint.

Looks like it is time to start making cell phone calls from outside.

Re:Tinfoil House (1)

goldmaneye (1374027) | more than 4 years ago | (#29605349)

Nah, it's too cold for that where I live. Looks like it's time to get one of those old-fashioned "land lines" installed (like your parents have, or maybe used to have).

In fact, as a general solution to some of the loss-of-privacy implications of new technology, may I suggest ... old technology?

Re:Tinfoil House (1)

TyIzaeL (1203354) | more than 4 years ago | (#29606267)

I still have a land line, its much more reliable than cell service.

Re:Tinfoil House (1)

donutz (195717) | more than 4 years ago | (#29606483)

"Looks like it is time to start making cell phone calls from outside."

Maybe not, if the cell tower is overhead, and you didn't paint the ceilings?

Re:Tinfoil House (2, Interesting)

giltwist (1313107) | more than 4 years ago | (#29604981)

While a coat of aluminum oxide does count as a Faraday cage, I believe thickness is real issue with the protective power. Paint is only a few molecules thick (relatively) to the more traditional wire mesh. If you were going to build a new house, I think you'd be better including a brass mesh in the walls of your house.

Re:Tinfoil House (3, Informative)

Aging_Newbie (16932) | more than 4 years ago | (#29605819)

Aluminum oxide is a dielectric with breakdown around 16kV/mm and dielectric constant of 9. That puts the material in a class similar to glass. As such it would be among the most ineffective Faraday cages since the walls of such a cage must be conductive, and to be truly effective, VERY Conductive. In fact, at high RF ranges light weight cages and shielding have to be made of silver, gold, etc. to keep the skin effect thickness of the material down to manageable values. What is interesting about the aluminum oxide dielectric is its apparent very lossy nature to some RF frequencies, while being "transparent" to others. That is sort of similar to the behavior of pure water, which, if absolutely pure, is a dielectric, but as a polar dielectric it absorbs high frequencies in your microwave oven or in the atmosphere between me and my geosynchronous internet satellite.

The usefulness of aluminum oxide as a dielectric has been known a long time and electrolytic capacitors used as power supply filters, among other things, use its characteristics to make large capacitances in small volumes.

tinfoil paint (0)

Anonymous Coward | more than 4 years ago | (#29604797)

Solution - Anti-wi-fi paint offers security:
http://news.bbc.co.uk/2/hi/technology/8279549.stm

They're a little late... (5, Funny)

ibsteve2u (1184603) | more than 4 years ago | (#29604805)

What with three wireless hubs, an RFID scanner, and half-a-dozen Bluetooth devices always on, I'm pretty sure I'm already casting EMF shadows on my walls.

Been seeing some really big spiders, too...

Re:They're a little late... (3, Funny)

Yvan256 (722131) | more than 4 years ago | (#29604975)

Oh, OH! Let a spider bite you and let us know the results!

Reference past article... (2, Funny)

carp3_noct3m (1185697) | more than 4 years ago | (#29604809)

http://tech.slashdot.org/story/09/09/30/1534202/Using-Aluminum-Oxide-Paint-To-Secure-Wi-Fi?art_pos=19 [slashdot.org]

Step 1:Paint your house with it.
Step 2: Install a Faraday cage in the dungeon *ahem* basement.
Step 3: ??????
Step 4: Privacy!!!!

I think I see a problem here. (1)

westlake (615356) | more than 4 years ago | (#29605347)

Step 1 Paint your house with iy.
Step 2: Install a Faraday cage in the basement.

Some folks step out into the light and air.

Which means they'll want WiFi access on the porch, the back yard - the patio and the sundeck.

Re:I think I see a problem here. (5, Funny)

L4t3r4lu5 (1216702) | more than 4 years ago | (#29605479)

Which means they'll want WiFi access on the porch, the back yard - the patio and the sundeck.

I think you mean the front observation deck, the firing range, and the snipers nest.

Re:I think I see a problem here. (1)

Foofoobar (318279) | more than 4 years ago | (#29605921)

Don't need to see through walls when your outside... duh!

Re:I think I see a problem here. (1)

westlake (615356) | more than 4 years ago | (#29606459)

Don't need to see through walls when your outside... duh!

True. But you might want network access outside without installing an antenna on your roof.

Re:I think I see a problem here. (1)

Foofoobar (318279) | more than 4 years ago | (#29606653)

WTF?!! Yes... I do alot of surfing while on my roof installing antennaes. LOL.

Seriously though, the connection goes through windows not covered with aluminum oxide and other holes in your barrier. No house will ever be a complete faraday cage and for something like this, all you have to do is eliminate a large percentage of them to reduce the bounce so as to make the 'shapes' it reports back too vague. In other words... it would be less of a faraday cage and more like 'chafe' to cause interference.

I know its bad form to reply to yourself but.. (1)

carp3_noct3m (1185697) | more than 4 years ago | (#29605395)

I just thought of something... What if the company who developed the paint had this story ready (bribing of researchers) to release right after they announced their paint. Instant interest/sales increase...stroke of genius!

Re:Reference past article... (1)

AniVisual (1373773) | more than 4 years ago | (#29605795)

The resolution seems to be quite poor, it does not seem to be able to identify shapes, only movement. You won't be able to identify the person who broke into your home, let alone be worried about wifi pics of nudity. Sometimes, threats to our privacy get overly hyped.

I am not an engineer, but if you live in a city apartment, there is usually so much interference that hacking wifi to pinpoint areas of low signal may not be very effective.

Old News (1)

140Mandak262Jamuna (970587) | more than 4 years ago | (#29604831)

I have already seen this being deployed by the Blue Thunder [imdb.com] helicopter. Way back in the 80s.

Re:Old News (1)

L4t3r4lu5 (1216702) | more than 4 years ago | (#29605537)

That was thermal imaging. I distinctly remember seeing Colonel Cochrane (Malcomn McDowell) chatting in a room with a couple of people several floors up, curtains closed with Frank McMurphy (Bruce Schneider) hovering outside in Blue Thunder looking at a false colour thermal image of the room contents.

Aluminum oxide (0)

Anonymous Coward | more than 4 years ago | (#29604833)

Slashdot saving you from Slashdot http://tech.slashdot.org/story/09/09/30/1534202/Using-Aluminum-Oxide-Paint-To-Secure-Wi-Fi?from=rss

Oh noes! (1, Insightful)

onyxruby (118189) | more than 4 years ago | (#29604835)

Horrible, a piece of technology could be abused if used in a certain way by evil and nefarious bad guys. We'll have to ban this wireless technology just in case they're out to get us. Breakout the crowbars, put on the night vision goggles, prep the bolt cutters for backup and defend yourself with the glass cutter before they break in. Tinfoil hats to the rescue!

Re:Oh noes! (1)

sopssa (1498795) | more than 4 years ago | (#29605093)

Well, this would be quite hard to notice if used for you. Police/Military would probably need to get permission to use it, but that wont stop all the kids and pervert adults.

Re:Oh noes! (1)

amplt1337 (707922) | more than 4 years ago | (#29605333)

Police/Military would probably need to get permission to use it

The way they need to get permission to wiretap your phone?

Re:Oh noes! (1)

leuk_he (194174) | more than 4 years ago | (#29605315)

On the other hand, the girl from next door is offered free wireless in her bedroom! What could be wrong with that?

Re:Oh noes! (1)

girlintraining (1395911) | more than 4 years ago | (#29606105)

On the other hand, the girl from next door is offered free wireless in her bedroom! What could be wrong with that?

Two things: First, the photoshopped porn out there looks a lot better than me naked, so I'm not exactly worried about grainy black and white photos showing my outline getting any kind of popularity online. If these were at all popular, TSA employees would be getting fired left and right for sharing with their friends. Apparently, they're just not any kind of a turn-on. Secondly -- I have been teaching my friends how to access that free wireless and let me just say, Mr. Johnson, Age 34 of Sacremento, CA, that buying a HP laptop with integrated webcam has given us all a laugh. You've been weighed, measured, and found wanting. Also, are you ever planning on enabling Windows Firewall and patching past SP2?

Sincerely,

The girl next door.

P.S. Really sorry about the disconnect notice from Comcast, but it wasn't from filesharing like you're assuming. I wanted to mirror all the slashfic on fanfiction.net. It seemed like a good idea at the time. I've since deleted most of it -- too much harryxhermione, not enough malfoyxsnape.

Re:Oh noes! (0, Redundant)

Ranzear (1082021) | more than 4 years ago | (#29606389)

Or you can just paint your house with aluminum oxide [slashdot.org]

Well, thats Gonna sell that new Al-O paint (0, Redundant)

PalmKiller (174161) | more than 4 years ago | (#29604839)

Sounds like another vote for that new aluminum oxide radio signal killing paint.

if you're a real nutter (0)

Anonymous Coward | more than 4 years ago | (#29604841)

Now you need not only a battering ram proof doors and acrylic windows, but also lead in your walls.

I can already monitor the movements of my neighbor (3, Funny)

Anonymous Coward | more than 4 years ago | (#29604851)

Terribly thin floors & cielings mean that I can monitor where my upstairs neighbor is and what he is doing at all times.

Of course my neighbors can monitor when I have sex and how good it is, but I kind of get off on that anyway...

The Dark Knight (2, Informative)

GameboyRMH (1153867) | more than 4 years ago | (#29604895)

Didn't Batman have some goggles that work like this in The Dark Knight?

Re:The Dark Knight (0)

Anonymous Coward | more than 4 years ago | (#29605167)

That's the first thing I thought of when I saw this story too... similar type of concept. I doubt you could get real-time goggles like he had or a true city-wide system but the theoretic applications here could be a little scary.

Now excuse me while I replace my vinyl siding with tinfoil....

Re:The Dark Knight (1)

MBGMorden (803437) | more than 4 years ago | (#29605281)

Now excuse me while I replace my vinyl siding with tinfoil....

IIRC if your house hs Tyvek sheets under the siding then there's already a layer of foil around the walls . . .

Re:The Dark Knight (1)

evilkasper (1292798) | more than 4 years ago | (#29605397)

I was going to say Batman did it first.. although he used cell phones.... all of them (at least in Gotham)

Re:The Dark Knight (0)

Anonymous Coward | more than 4 years ago | (#29605949)

I Got the Gist that Batman used the cells for acoustic tomography, This sound more like EM tomography.

Re:The Dark Knight (0)

Anonymous Coward | more than 4 years ago | (#29606617)

Kent Brockman also had something similar:

KENT: Of course, there's no way to see into the Simpson home without some kind of infrared heat sensitive camera. So let's turn it on.

AC

Worried about people spying on you? (2, Interesting)

devnullkac (223246) | more than 4 years ago | (#29604909)

This sounds like a job for... Aluminum Oxide Paint! [slashdot.org]

Re:Worried about people spying on you? (2, Interesting)

skornenicholas (1360763) | more than 4 years ago | (#29604997)

Aluminum Oxide on the inside, Lead paint on the outside, huzzah you live in a microwave oven!

ah ha! (1)

Dyinobal (1427207) | more than 4 years ago | (#29604949)

I see The Dark Knight movie had it wrong!

Who cares about the neighbors spying? (0)

Anonymous Coward | more than 4 years ago | (#29604967)

I'm more worried about robbers. Lucky for me I have a huge train set and a life size cut out of Michael Jordan to fool them with.

Pad Picture (1)

z80kid (711852) | more than 4 years ago | (#29605017)

The only picture in TFA was a blob.

Get back to me when it can see tits....

Neighbors (1)

Masterofpsi (1643965) | more than 4 years ago | (#29605047)

"But such a network, which uses cheap off-the-shelf components, might also be easily deployed by your neighbor or anybody else wanting to monitor movements in your home." They make it sound as if someone's likely to spy on the readers of the article. But given the Slashdot population, isn't it more likely to be the other way around?

Another system to be blocked with cheap hardware (1)

gestalt_n_pepper (991155) | more than 4 years ago | (#29605069)

Personally, I think I'll set up a Van DeGraff generator. Really adds to the mad scientist lair effect too.

Excellent... (1)

mrops (927562) | more than 4 years ago | (#29605123)

..now they can really prosecute people for sodomy.

Re:Excellent... (0)

Anonymous Coward | more than 4 years ago | (#29605421)

I think they might have to wait for a clearer picture. Two blobs in close proximity could be a lot of things. I think you're safe to continue for a while yet.

Re:Excellent... (1)

CamDawg (970808) | more than 4 years ago | (#29605935)

Just replying to remove my accidental mod point expenditure.

Neighbors (3, Funny)

Anonymous Coward | more than 4 years ago | (#29605129)

Up, down, up, down, what the heck are they doing?

I'm not worried about wifi (1)

OglinTatas (710589) | more than 4 years ago | (#29605203)

the architect who designed my home put a floor to ceiling window RIGHT NEXT TO THE TOILET. I applied privacy film to the glass, and keep the shade down, and the lights off... no, I'm not worried about my neighbors using wifi to monitor my movements...

Re:I'm not worried about wifi (1)

amplt1337 (707922) | more than 4 years ago | (#29605369)

Wow, I'm surprised you didn't notice that before you had the plans built... (or do you mean the architect who designed your model?)

Device invented to see through walls! (2, Funny)

Lord Lode (1290856) | more than 4 years ago | (#29605235)

It's called a window.

Re:Device invented to see through walls! (1)

drseuk (824707) | more than 4 years ago | (#29605749)

If you've got Windows you've installed too many.

Re:Device invented to see through walls! (1)

ArsenneLupin (766289) | more than 4 years ago | (#29605965)

It's called a window.

So windows are insecure.... what else is new?

Re:Device invented to see through walls! (1)

CannonballHead (842625) | more than 4 years ago | (#29606589)

Microsoft was ahead of its time!

I've got some paint I want to sell you (1)

FreeUser (11483) | more than 4 years ago | (#29605243)

This [slashdot.org] should solve any peeping Tom/Big Bro Cop issues we have. Get out your paintbrush, ladder, and overalls...

Google Maps? (2, Informative)

Zantac69 (1331461) | more than 4 years ago | (#29605317)

This cracked me up:

"We envision a building imaging scenario similar to the following. Emergency responders, military forces, or police arrive at a scene where entry into a building is potentially dangerous. ... The nodes immediately form a network and self-localize, perhaps using information about the size and shape of the building from a database (eg Google maps) and some known-location coordinates (eg using GPS).

Anyone remember http://en.wikipedia.org/wiki/NATO_bombing_of_the_Chinese_embassy_in_Belgrade [wikipedia.org] ?

Oops! Map was wrong and we are in the wrong house!

Re:Google Maps? (1)

westlake (615356) | more than 4 years ago | (#29605579)

Oops! Map was wrong and we are in the wrong house!

The occupants and first responders are still at far less risk than if the entry was made blindly.

Something the community can get into (4, Interesting)

drinkypoo (153816) | more than 4 years ago | (#29605361)

You can get xbee-equipped computers (mostly with pics, avrs, basic stamps, etc) for super cheap, like three for a bill. I'm considering them for a remote monitoring and control application where wifi is overkill in some ways and inadequate in others (line of sight issues.) Current xbee modules all seem to support mesh networking, which is really the big draw to me of the protocol itself here, or at least the most readily available implementation. Being able to put out a sensor net and get a sort of meta-sense out of it would be all the more exciting. I'm sure the same thought has occurred to everyone, of course. This seems like the kind of thing that would give the [para]military types a massive hard-on given that they're already playing with the idea of gigantic numbers of drones and communications devices scattered across the battlefields of tomorrow... and our homes and cities.

Oh shi... (0)

Anonymous Coward | more than 4 years ago | (#29605471)

Don't tell UK government about it.

Too cumbersome. (3, Interesting)

AniVisual (1373773) | more than 4 years ago | (#29605623)

by "interrogating" this volume of space with many signals, picked up by multiple receivers, it is possible to build up a picture of the movement within it.

As I understand, the researchers used 34 receivers. You will need a whole lot of receivers. More than you might want to buy and maintain to offer you what is at best a poor resolution of moving things beyond walls.

Wow innovation! (2, Insightful)

rahlquist (558509) | more than 4 years ago | (#29605889)

Discerning the physical location and movement of an object with radio waves, what can we call such a thing?

Ahh, yes, Radar...

Re:Wow innovation! (4, Informative)

Anonymous Coward | more than 4 years ago | (#29606555)

However, this isn't radar, it's tomography. Radio tomography. And the innovation isn't radio tomography, it's using stock WiFi hardware to do it, but I suspect you already knew that.

Ash did it better.... (1)

WalesAlex (1476335) | more than 4 years ago | (#29606113)

...I still think measuring microchanges in air density is the way to go!

OK I'll paint my house... (0, Redundant)

Anonymous Coward | more than 4 years ago | (#29606121)

Hmmm... where can I buy some cans of Aluminum Oxide paint?

Competition (2, Informative)

lbgator (1208974) | more than 4 years ago | (#29606215)

Although this thing idea is neat, there is an Israeli company that is currently selling RF tech to do the same thing. It comes in a package the size of a suitcase, and can be deployed without having to put transmitters/receivers all over the place. Check it out.

I actually applied to work for that company but wasn't smart enough. Blasted Israelis and their blasted smarter-than-me-ness.

Re:Competition (1)

lbgator (1208974) | more than 4 years ago | (#29606233)

Bah. Forgot the link [camero-tech.com]

I did some searching, here's a video: (3, Informative)

mckinnsb (984522) | more than 4 years ago | (#29606269)

The image in the article isn't really good. If you want to see a demonstration of what they did in real time, it's here [encyclopedia.com] .

Country life (2, Funny)

boristdog (133725) | more than 4 years ago | (#29606383)

Another advantage of living in the country.

If someone is within 1 km of my house (and I doubt this system has that kind of range) the dogs and various livestock alert me WAY before that person can see my movements. And those movements will be important to that person at this point. Especially the "cocking the shotgun" movement.

Videos at their website (3, Informative)

shadow_slicer (607649) | more than 4 years ago | (#29606419)

Check out their demonstration videos at http://span.ece.utah.edu/radio-tomographic-imaging [utah.edu] .

I was fortunate enough to see the demo at Mobicom last year. It's a really neat application, even if the math is nothing new.

Cracker risk? (0)

Anonymous Coward | more than 4 years ago | (#29606539)

Does this mean that a cracker could load my router with software and use it to spy on me?

Ah, propellerheads, hello? (2, Informative)

TheHawke (237817) | more than 4 years ago | (#29606635)

They just reinvented RADAR for pity's sake! What is 802.xx? 2-5GHZ Microwave frequencies! It's rather like reinventing the wheel, only this time they used millimeter band, low powered microwaves to do it with. Hooray they are able to use it as a poor man's license-free RADAR system, I'll give them credit for that.

Thank goodness for Kyllo vs. U.S. (3, Informative)

cpu_fusion (705735) | more than 4 years ago | (#29606849)

... wherein the Supreme Court (including Scalia, amazingly) held that peering into homes using equipment that was not available in common use by the layperson was within the bounds of the 4th amendment, and therefore requires a search warrant.

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