Is it possible to retrieve an user id before agreeing to give permissions to an application?
I’m trying to salute a user before agreeing to the permission request. But for that I’ll need to know his/her user id so I can access the info via graph API.
The idea is to do it when he/she is visiting for the first time my page app.
http://apps.facebook.com/xxxxxxxxxxxxxxx
Any idea?
This is NOT possible. Facebook WILL NOT share the user id with any app without the user explicitly allow that (partners are always a special case).