Is there a way to block multiple logins to the same user account?

I know there is a way to kick/prevent this based on the resources being the same, but is it possible to do this based only on bare JID?

If not, can we get something like this added via a feature request or plugin?

I think there is no way to do this. As such option is against the specifications and the spirit of xmpp, i don’t really want to file it as an official request. Of course, anyone is free to create and share their custom plugin for this.

I figured that was the case, based on what I found while searching. It would be a handy feature for internal uses. Its easy enough to work around by allowing only spark, and updating everyone resource to match. Maybe I’ll put up a bounty for a plug in if it becomes an issue! Thanks wroot!