Login with XML RPC using facebook oauth

Hi all, I will be creating a user account using Facebook oAuth. I want to access the same account in mobile app and also from PHP. It will be using XML-RPC. I am not sure how to login, because XML-RPC uses username and password, in my case, i won't be having password. How do i solve this problem? Please advice

Hi all, I will be creating a user account using Facebook oAuth. I want to access the same account in mobile app and also from PHP. It will be using XML-RPC.

Lee mas