> Could big Brother use this to invade our privacy?

yes. in this case big brother would use this technique to hide

a hash of your identity in the program, so it can find pirated copies.

something like the audio watermarking we've been hearing about a few months ago.

fortunately now that we know the technology we can

write software to reset this signature

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Link to this comment: http://www.securityfocus.com/comments/articles/2623/18324#18324