Detecting duplicate accounts by device

[pinkteddyx64]

Me neither. By the way, would it be ok to name the forum that I was talking about at the start of this thread?

[pinkteddyx64]

I know somebody who was a member of a forum which uses a heavily customised version of vbulletin 4.0 and they used to create a new account on their Android smartphone every time they were on a different...