Enforcing a user single-connection policy

Is it possible in Wildfire to enforce a single connection limit for each user?

What I mean is, I would like to force any existing user connection to disconnect if the user logs in using another jabber client instance.

The behaviour you get when you login with the same jabber resource string, that is what I would like, but I would like the same thing to happen even if the resource string is different.

Most other IM systems seems to prevent users from being logged in from multiple locations, and I was wondering how to replicate this behaviour in Wildfire.

Chris.

Message was edited by: ChrisD