See our new Facebook Login changelog to see a summary of recent changes. Facebook Login A secure, fast, and convenient way for users to log into your app, and for your app to ask for permissions to access data
Android - Facebook Login - Documentation - Facebook for ...
Facebook Login for Android - Quickstart. The Facebook SDK for Android enables people to sign into your app with Facebook Login. When people log into your app with Facebook they can grant permissions to your app so you can retrieve information or perform actions on Facebook on their behalf.
Business Manager is a Facebook tool that helps you organize and manage your business. When you join Business Manager, coworkers can't view your personal Facebook profile unless you approve their friend requests. Coworkers can only see your name, work email address and the Pages and ad accounts you have access to.