What's your policy about two people in the same house playing?
We'd have the same IP address.
Our system auto-blocks accounts with the same IP accessing the poker suite, since there's no way to ever verify that you were playing honestly. Even though I personally trust you and lots of people on the forum trust you, it would not be fair to our other players to allow that type of thing unless we did it across the board.
Sorry!
But how about playing other games, particularly the dice games aside from the poker ones. I have 3-5 mates here in our flat sharing the same IP addresses when accessing your site. Would that be blocked by your site or not?
You'd be blocked from poker, unfortunately, but not our other games. Since we can't be in your flat with you making sure you're not sharing info for your hands, we have to block people on the same IP
But if each of the 5 people was using their own phone's data connection to get online it would be OK?
I think you should detect collusion based on in-game actions not on which IP address they are using, because it is so easy to change your IP address.
IP address is a very poor indicator of collusion; same IP address doesn't imply collusion, and different IP address doesn't imply lack of collusion.