Php Visitor Tracking?

I’m looking for something like a cross between the user fingerprints code (https://poeticpollution.net/scripts/UserFingerprints/php/) and opentracker (https://www.opentracker.net/pages/demo.jsp)
opentracker looks really spiffy, but it’s not open source ;-(
what I want is a way to associate page views with specific users.
I like the way that the opentracker demo shows the last few people that were (or are still) on and when you mouse over the little icon you get all the relevant information. (user agent, isp, os, etc.) I really like having the focus on the visitors rather than the site.
I want to be able to look and say here’s the person from last week ( from africa, win2k, 1024×768, win IE 6.1)who looked at my post about the zoo and then came to the front page.. That would Rock.