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Thread: How do they track my PC?

  1. #1 How do they track my PC? 
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    There is some website on which I sometimes go. They invariably recognize my PC even if I reboot from write-protected system and register under new user name and password. When I go to their page like unregistered user they display anything like for a regular people. But once I register (each time under new name and password) they recognize "me" and display something special. How do they do that?
    If I know make mistake it is only Internet providers who have right to know my MAC address?


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    Forum Radioactive Isotope cosmictraveler's Avatar
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    They get your providers address whenever you visit any place on the web. Everyone has an IP and that is what is being recognized. You can't change it either unless you close down the one you have and open a new account elsewhere.


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    Quote Originally Posted by cosmictraveler View Post
    They get your providers address whenever you visit any place on the web. Everyone has an IP and that is what is being recognized. You can't change it either unless you close down the one you have and open a new account elsewhere.
    I believe many ISPs assign IP addresses dynamically so that the IP address I have today may not be the same one I had yesterday. Indeed, there have been occasions where Wikipedia has rebuked me for edits that my current IP address had previously made.

    However, I believe that tracking is done using cookies. Indeed, there are "tracking cookies" specifically for the purpose of tracking internet usage.
    There are no paradoxes in relativity, just people's misunderstandings of it.
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    Forum Radioactive Isotope cosmictraveler's Avatar
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    True but they can be removed by your virus protection program or other similar types of programs you use to periodically clean out your junk files. If your ISP was changed daily then all the sites you use like banking are going to ask you for everything to be certain it is you and not some other person with that new ISP trying to get into your account.
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  6. #5  
    KJW
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    Quote Originally Posted by cosmictraveler View Post
    True but they can be removed by your virus protection program or other similar types of programs you use to periodically clean out your junk files.
    Yes, but users still have to actually do that. Cookies (other than those classified as "tracking cookies") are not usually removed by antimalware because they do have a legitimate function.


    Quote Originally Posted by cosmictraveler View Post
    If your ISP was changed daily then all the sites you use like banking are going to ask you for everything to be certain it is you and not some other person with that new ISP trying to get into your account.
    I know my IP address is dynamically allocated when I connect to my ISP. That means that a website cannot use IP address as a long-term identifier even if many users have static IP addresses.
    There are no paradoxes in relativity, just people's misunderstandings of it.
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  7. #6  
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    Quote Originally Posted by Stanley514 View Post
    There is some website on which I sometimes go. They invariably recognize my PC even if I reboot from write-protected system and register under new user name and password. When I go to their page like unregistered user they display anything like for a regular people. But once I register (each time under new name and password) they recognize "me" and display something special. How do they do that?
    If I know make mistake it is only Internet providers who have right to know my MAC address?
    Does this happen if you use a different browser? Try the experiment and report back.
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