Does WordPress have any functions which will help me create a system to have data ( eg custom posts ) associated with a particular user and (by default) not visible to any other user. I have had a look around and I haven't seen anything really like this so I am starting to suspect that it's outside of WordPress's domain but I thought I'd just ask here to make sure I wasn't missing anything obvious. I haven't fully checked out all the capabilities of the membership plugins because I believe they focus of allowing all ( or tiered ) content to logged in members ... so I may be wrong in this.
What I need is something like a membership scenario where members can only see their own content, and not anyone else's. Is it possible to do something like this with WordPress, ideally with the core functions or better still a plugin. I am thinking that the user table is not designed for this type of activity.
I found this article, and I know it's pretty old, but from this I sort of derive that adding twitter usernames and the like are about as far as we can go.