As we know, at iOS, we could use UIDocumentInteractionController to display the "Open in" menu where a list of third party apps which could handle the document. User could pick one app to open the document at that app.
We are looking for if we could only display a partial list at the "Open In" menu so we could apply security control here. With UIDocumentInteractionController, somehow we didn't find a way to do this. Is this possible at iOS?
since no one is answering this question, I am going to answer myself. Based on current research, there is no way to do this at iOS 6. However at the iOS 7, there seems a new feature added to manage open in per these 2 links although I haven't got chance to look into API yet.