User Access- EP must allow user to login only once
I have requirement similar to yahoo messanger.
In yahoo messanger you can only login with single user id only once. i.e if you try to login once again with the same user id in yahoo messanger it will noe allow to login.
the same functionality i need in EP.
user must login into EP with single user ID only once.
how can we do this??
please provide some documentation or steps on this