Hi,
I can't answer your question directly, but I maybe I can help you with a hint.
Michael Schilli (Author of PerlPower (Goto Perl in german) and one of our favorite Perl-authors in Germany) has actually written such a tracking system (using cookies and outputting graphics) already.
It was described in two articles of ther (german) linux-magazin. I don't know whether you are capable of speaking german, or whether the babelfish can help you out, or if the sourcecode is just enough, but here are the links.

Again: it's all in german.

Regards
Stefan K 

$dom = "skamphausen.de";   ##   May The Open Source Be With You!
$Mail = "mail@$dom;  $Url = "http://www.$dom";

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In reply to Re: Cookie Seesions -again ! by stefan k
in thread Cookie Seesions -again ! by Gushie

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