Wednesday, November 13, 2013

A News Analysis - Computer Science



Brief Overview
The article, New Technology Can Track Movement Behind Walls from The Economic Times written by Devina Sengupta explains a new technological breakthrough in Computer Science.  "Researchers at Massachusetts Institute of Technology's Computer Science and Artificial Intelligence Laboratory are using low-cost wi-fi technology to develop the system that spots movement of people in rooms or behind walls."  This new technology, Wi-Vi, can be thought of as a cheap and accessible radar.


Doesn't this already exist?
The technology of seeing through walls already exists, so why is this important?  "We wanted to create a device that is low-power, portable and simple enough for anyone to use, to give people the ability to see through walls and closed doors," said Dina Katabi, a professor in MIT's Department of Electrical Engineering and Computer Science.  This new technology is all about making through-wall movement tracking available to the general public.  The purpose of the technology and what it will be used for is all up to the buyer.


Positive and Negative Uses
Some might think that the technology to see through walls shouldn't be available to everyone, while others believe this breakthrough is useful and won't be abused.  Wi-Vi can be used in many ways, positive and negative.  Some of the positive ideas for using Wi-Vi include: cheap radar for military and police, improved home security, and even for traffic violations.  However, it can be argued that making this technology available to all can easily be abused in ways such as: home robbery, heists, and a lack of privacy.  There really is no saying what the general public will use the technology for when it finally reaches its initial release.


How It Works
Wi-Vi sends a Wi-Fi signal at a wall and bounces back, however, a portion of the Wi-Fi signal penetrates the wall and reflects off all the objects inside the next room.  "So we had to come up with a technology that could cancel out all these other reflections, and keep only those from the moving human body," Katabi said.  To do this, Wi-Vi sends out two signals.  The first signal is sent out and reflects back, giving a static view of the other side.  The next signal is sent out and reflects back, comparing itself to the first, static view.  Once both signals have been compared, it is simple to tell which objects have moved and which objects have not moved.  "So, if the person moves behind the wall, all reflections from static objects are cancelled out, and the only thing registered by the device is the moving human," Adib added.  Once the system has cancelled out all of the reflections from static objects, it can then concentrate on tracking the person as he or she moves around the room.


Ethos, Logos, and Pathos
The author does a mediocre job of establishing a strong ethos.  The author cites many professionals as well as scholarly articles for evidence, however, we don't actually get to know anything about the author's background or his stance on the issue, so it is easy to question the credibility.
The author does a great job at establishing a strong pathos.  Throughout the article, it does pull at your emotions because it makes you wonder if the technology will be used for good or bad.  This is helpful and important for the article as it encourages the reader to keep reading further.
The author does an excellent job with his logos.  All of the claims made in the article are supported with a link to an article that explains things in more detail, or it comes as a direct quote from someone who is a credible source.  Overall, the article has really strong logos and pathos, but it could use improvements when it comes to the ethos and giving some background information in the author.


Summary
Wi-Vi is a new technology that will be coming to the general public very soon.  Wi-Vi is a device that allows the tracking of movement through a wall or barrier.  This is the first time such a device will be available for a low cost and accessible to everyone.  There is no saying how well Wi-Vi will do on the market and what consumers will decide to use it for; only time will tell.

1 comment:

  1. Well this was a new and interesting product that I have not heard of before. It is cool and interesting to see how old technology that people use every day is getting put into something new and interesting. I see the potential for this product but mostly for the military and the police. To myself I do not see a real advantage to have this product in the public setting. Police and military personal could use this to its fullest ability and save lives, I think for the general public it might do ok for a home security system but other than that it does not serve a real purpose. Plus the chance of bad people (gunmen, thieves, and others) to use this for no good seems to be a strong negative for this product to be going to the public. I do think that this is a very cool and interesting product will a lot of potential.

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