Ah yes, my mistake. I gave the wrong example, the point behind this type of fingerprint is to protect against session hijacking. This method would be especially helpful to stop, for example, one person attepting to hijack another persons session by masking their IP. Assuming they're using different browsers, the fingerprint could detect this type of attack.

And by the way, it doesn't hurt to be polite to people. After all, if I'm going to be hit with a blunt attitude for trying to help, then why should I even bother in the first place?

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Any fool can write code that a computer can understand. Good programmers write code that humans can understand.