Does it have to be a cookie? I use the IP address and store that somewhere.
Liam, please don't advise relying on the IP address for anything. It's been discussed to death on the list before, but in short, the highlights are:
1. users sharing a connection behind a firewall or router will often all have the same IP address
2. users of larger ISPs (AOL being the widely documented example) will often have a new IP address for each request they make
Justin
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