Something about push notification

[giovanni_c]

Hi all!
I'd like to discuss about your experience on push notification with iOS.
I'm working on an iPhone/Android App that will be able to receive push notification.
Right now I can send/receive push notification correctly and I think it's a great thing!
But I've a little "operative" problem so I'm asking to you some advice.

My app need a login to work so I don't want it receive notification when user is not logged in.
How can I obtain this? It's possible to "suspend" the notification feature?
I've read a lot documentation about local notification. Maybe this can help me to do the trick?