It is technically possible for your cell phone provider to know where all places you have travelled with exact timings and the distance with a granularity of 0.5 km - 2 kms.
For cell phone to work, it has to send signals to the nearest tower. When it sends the signals, the tower comes to know of the area of this cell phone. If the service provider of the cell phone stores that information, then they can find out where all that person has gone at what time. It literally means, we are telling all our movements to the service providers.
This is the reason why Richard Stallman does not use cell phones.
Saturday, February 21, 2009
Your Privacy is an Illusion
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Why do you have to obscure your location unless you are doing something mysterious? You can probably turn off your cell phone at those times. This can in fact be of help in crime investigation. For many common people like me, all their friends already know where they will be at a given time - home, office or at an entertainment place around my house. If RMS wants to hide from people let him, this is unnecessary FUD.
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