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Wednesday, October 12, 2011

Ip Address Reveal Where You Are

Your IP address tells basically not where you are. So it is not usually possible to determine your position just by looking at ip address. But now scientists have developed a method of making reasonably accurate positioning by simply looking at the ip address for each unit. It could be used to deliver services that are tailored to the user's location - but it could also be used to deliver advertisements for local shops.

Scientists from the China University of Electronic Science and Technology in Chengdu and the U.S. Department of Northwestern University in Illinois and a researcher from Microsoft Research, who have presented their new method in a sensational research.Positionsbestemmelse is usually something going on each client device - either by using an integrated GPS or by looking for known wireless networks nearby. The user can of course even enter his position. But in all these scenarios, the user control over whether the position must be determined.

The new method means that the position is automatically detected as soon as you contact a Web server and thus sends its IP address - may be prevented by using a proxy server or otherwise blur address.

Scientists use three different steps to fix your position from ip address. In the first step sent a data packet to the device and the time it takes the packets to arrive are used to calculate the device located with a coarse accuracy of 200 kilometers.

In the next step is sent back data packets - but this time for computers where physical location is known. It is typically universities and companies that host their own servers. Here, we know that is the address where the server says. Researchers have drawn around 76,000 physical addresses for servers onto Google Maps.

Scientists send packets to servers in the area where the searched device is located. Then compare the Datapak pathways. If a data packet to a server with a known physical address passes the same router as a data packet to the device which attempts to determine the position, then compared transport time for the package.

The last step takes the system so out which of the known computers that is closest to the searched device. It gives a fairly good positioning of the device. On average, the accuracy of 700 meters but in some cases is as low as 100 meters. So you can eg. find out in which district the computer is located and perhaps also on the street.

It sounds like a technically complicated process, but it can probably be automated so tracking only takes a few seconds.

In their paper employs the researchers did not deal with the ethical and legal implications of their technology, which of course allows you to track all Internet users without their knowledge or consent.


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