Hi
Why not just use the session, if another is created bump the old out! You can use IP tracking to, I know some use proxies, but there are not as many as there once were! On the forums I manage for my clients I do allow some proxies, legitimate ones, the others I kill at the server level. All of the forums I manage for my clients have a single user access rule in place! It is the best approach to take, this way when someone does something they and only they are accountable!
Sonia
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