[ I have read something about this. I didn't get what i am looking for.. There are lot of people have searched / asked this kind of question. ]
I have a facebook fan page. I have one website based facebook app.
FB users should visit my website. If they are the fan of the page, they can use that app. Otherwise they can't use it.
Is there anyway to do this without getting any permission from users? I have a facebook like plugin on my page which shows whether i like the page or not.
Can i make use of it? Give some clues to achieve this.
Thanks