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A team of electrical engineers has published a paper demonstrating how a passive radar system can see through walls by reading Wi-Fi radio waves. The method is similar to how radio waves are used to detect moving objects. When a radio wave reflects off of a moving object its frequency changes -- this is known as the Doppler effect. By applying this theory to Wi-Fi radio signals, University College London engineers Karl Woodbridge and Kevin Chetty have come up with a handy way of finding out what's going on behind closed doors in urban environments, where nearly all homes and businesses have a Wi-Fi router setup and constantly emitting 2.4GHz or 5GHz radio waves. The pair tested the efficacy of the theory by monitoring people inside a building using a 2.4-GHz passive multistatic receiver and a computer, to process the signals. The receiver has two antennae -- one that tracks the base radio signal in a given area where a router or access point is setup, and one that detects the reflected radio waves emitting a new frequency. By processing the data from both antennae, the system was able to accurately pinpoint where the people were through a 30.5cm-thick wall, what direction they were moving in and their speed. As a rule of thumb, the Wi-Fi radio wave frequency will increase when an individual moves towards a router, and decrease as they move away from it. The radar itself does not emit any signal and thus cannot be detected, making it ideal for spying or military operations...
Wi-Fi signals enable gesture recognition throughout entire home By Michelle Ma News and Information Posted under: Engineering, News Releases, Research, Technology Forget to turn off the lights before leaving the apartment? No problem. Just raise your hand, finger-swipe the air, and your lights will power down. Want to change the song playing on your music system in the other room? Move your hand to the right and flip through the songs. A hand gesture changes the TV channel. U of Washington A hand gesture changes the TV channel using WiSee technology. University of Washington computer scientists have developed gesture-recognition technology that brings this a step closer to reality. Researchers have shown it’s possible to leverage Wi-Fi signals around us to detect specific movements without needing sensors on the human body or cameras. By using an adapted Wi-Fi router and a few wireless devices in the living room, users could control their electronics and household appliances from any room in the home with a simple gesture.
The Wi-Fi in your home can track your moves like Xbox Kinect Devin Coldewey NBC News Facebook Twitter LinkedIn GooglePlus Email June 4, 2013 at 6:25 PM ET WiSee, a low-cost Wi-Fi-based technology. YouTube / WiSee Gestures made in mid-air are tracked by WiSee, a low-cost Wi-Fi-based technology. Want to switch off the living room lights from bed, change channels while washing dishes, or turn the heat up from the couch? A team at the University of Washington has rigged a standard Wi-Fi home network to detect your movements anywhere in the home and convert them into commands to control connected devices. Gesture recognition is the latest fad in games and tech, but even the newest systems require high-tech depth-sensing cameras or other special hardware. Microsoft's new Kinect, for instance, uses a photon-measuring method called "time of flight" sensing that was, until the Kinect was announced, limited to high-tech laboratories. And Kinect isn't small, either.
Originally posted by signalfire
Well, I'm doing my part.
I try to be as boring as possible, so as to put the entire staff of the NSA to sleep or perhaps encourage them to kill themselves out of extreme, unremitting boredom.
Originally posted by shaneslaughta
I want to know how they take into consideration multi path signal bounce.
Errm i mean this
Linkedit on 21-6-2013 by shaneslaughta because: (no reason given)
According to the team, a number of things can be done to improve the device -- including using a Clean algorithm to rid the readings of interference -- so that it is sensitive enough to read the movements a person's ribcage makes while breathing. In this way, they can also deduce whether a person is standing or sitting.
Originally posted by opethPA
I'm not sure what you want done about this or why any of it should be surprising to anyone.
If you want to be the secure from the tracking of the bad IlluminatedNSAHAARPMasons then live off the grid.
If you don't care then enjoy wifi and the internet.
Additionally just because something can happen doesn't mean it is happening. I'll give you a real world example.
The MDM (mobile device management) system we use gives the ability to use the GPS tracking on a phone to locate where that phone is in case it is lost or to remote wipe it. Switching off the GPS disables the phone based policy from that MDM which prevents it from receiving company email or sensitive information. This all makes total and logical sense but various people saw it as "big brother tracking them". The catch is that while GPS tracking is always enabled actually viewing that information or acting on it is disabled\locked down until the proper steps are taken. The few people that were convinced this was still draconian and 1984 refused to allow that policy so they were refused the ability to receive work based email on those devices. In the end that need won out and they accepted it. When one of those people lost their phone and we were able to track it down and then remotely wipe it they saw the value of that tech.
You can't have it both ways. You can't want the convenience, security and fun of wireless communication , be it voice\data, without the tracking and location abilities inherent to that technology. I view game consoles the same way. No one makes anyone buy a system and use their tracking tech but if you want to buy it then you know what you are getting into.
Originally posted by ShadellacZumbrum
reply to post by edmc^2
Van Eck Phreaking has been around for Years as well as the ability to watch YOU through your television.
Technology just makes this kind of stuff allot easier. Now they can tap into your web cam and turn it on without your knowledge. Just like the ability to turn on your cell phone speaker without detection.
Those barriers were surpassed years ago.
It is just very funny to me that people are just now becoming concerned about these things AFTER someone finally confirms we have been violated.
Come on people. . get with it. .. your thought processes are Outdated.
Originally posted by edmc^2
Originally posted by opethPA
I'm not sure what you want done about this or why any of it should be surprising to anyone.
If you want to be the secure from the tracking of the bad IlluminatedNSAHAARPMasons then live off the grid.
If you don't care then enjoy wifi and the internet.
Additionally just because something can happen doesn't mean it is happening. I'll give you a real world example.
The MDM (mobile device management) system we use gives the ability to use the GPS tracking on a phone to locate where that phone is in case it is lost or to remote wipe it. Switching off the GPS disables the phone based policy from that MDM which prevents it from receiving company email or sensitive information. This all makes total and logical sense but various people saw it as "big brother tracking them". The catch is that while GPS tracking is always enabled actually viewing that information or acting on it is disabled\locked down until the proper steps are taken. The few people that were convinced this was still draconian and 1984 refused to allow that policy so they were refused the ability to receive work based email on those devices. In the end that need won out and they accepted it. When one of those people lost their phone and we were able to track it down and then remotely wipe it they saw the value of that tech.
You can't have it both ways. You can't want the convenience, security and fun of wireless communication , be it voice\data, without the tracking and location abilities inherent to that technology. I view game consoles the same way. No one makes anyone buy a system and use their tracking tech but if you want to buy it then you know what you are getting into.
So I guess what your saying is - it's not a violation of privacy if they tract your every move since by default you agreed to purchase the product.
Originally posted by opethPA
Originally posted by edmc^2
Originally posted by opethPA
I'm not sure what you want done about this or why any of it should be surprising to anyone.
If you want to be the secure from the tracking of the bad IlluminatedNSAHAARPMasons then live off the grid.
If you don't care then enjoy wifi and the internet.
Additionally just because something can happen doesn't mean it is happening. I'll give you a real world example.
The MDM (mobile device management) system we use gives the ability to use the GPS tracking on a phone to locate where that phone is in case it is lost or to remote wipe it. Switching off the GPS disables the phone based policy from that MDM which prevents it from receiving company email or sensitive information. This all makes total and logical sense but various people saw it as "big brother tracking them". The catch is that while GPS tracking is always enabled actually viewing that information or acting on it is disabled\locked down until the proper steps are taken. The few people that were convinced this was still draconian and 1984 refused to allow that policy so they were refused the ability to receive work based email on those devices. In the end that need won out and they accepted it. When one of those people lost their phone and we were able to track it down and then remotely wipe it they saw the value of that tech.
You can't have it both ways. You can't want the convenience, security and fun of wireless communication , be it voice\data, without the tracking and location abilities inherent to that technology. I view game consoles the same way. No one makes anyone buy a system and use their tracking tech but if you want to buy it then you know what you are getting into.
So I guess what your saying is - it's not a violation of privacy if they tract your every move since by default you agreed to purchase the product.
In the scenario I gave the company phone is paid 100%. I can choose not to have a company phone which eliminates the ability for them to have 24/7 tracking enabled but I also lose the ability to receive work related email. Given my current job this is not an option so I accept the phone. In my opinion the fact that the ability to track is there should not bother people but rather the inappropriate use of that tracking is what should bother people.
Originally posted by dellmonty
this method is only good if your wifi is on.I never use mine so who cares.I keep it off and never turn it on.And if your not doing anything against the law,what does it matter.Do not expect it to get better,it wont.