Suppose userXXX is connected from 3 different resources.
How can (for example) userXXX/home discover if any of the other 2 possible instances is connected, or better yet how can he discover that his user is connected from another machine (different resource).
Is there an IQ for that ? Please tell me where I can read about it.
I beleive this is a rational thought as to know if your user is connected from different resources.