I have developed a facebook application, where users upload video and audio. Now i want that without authentication no user will be able to use the application.
Why i want this is because i need the user profile picture, the current loggedin user profile picture
. So that i can welcome him after authentication.
After searching for hours, i was unable to get answer for myself, so posting it here.
I have read the complete documentation
https://developers.facebook.com/docs/authentication/pagetab/
but unable to understand. It would be great if anyone can help me.