Is there a hack or something where I can compare IP addresses to see if we have users using multiple ID's?
Thanks.
You already have that option in userCP, on the main page you can search by IP, do that and then you get another button that says something like, find other users on the same IP
I use it and I have it set up not to take any action except to post a thread in the private admin section that tells you when someone has logged in under a different username from the same IP. f you need any help with the setting for it feel free to post back.