The document discusses Facebook access tokens and authentication flows. It describes different types of tokens including user access tokens, app access tokens, and page access tokens. It also explains short-lived tokens and long-lived tokens. Furthermore, it outlines three authentication flows: the token auth flow, the token extend flow, and the token for client flow which describe the processes for a client like a browser or app to authenticate with Facebook and obtain different types of access tokens.

1. Facebook
Access Tokens
20160329

2. Refresh Token

3. Facebook
User Facebook

5. User

6. Auth Flow

7. Auth Flow

8. Auth Flow

9. Facebook App

10. Facebook
User Client FacebookurAD App
urAD Server
Graphic API
AppSecret

11. Token

12. • User Access Token
• App Access Token
• Page Access Token

13. • Short-Lived Tokens
• Long-Lived Tokens

14. Token Auth Flow

15. Token Auth Flow
Client (Browser) 3rd Service Facebook Server
Facebook
Dialog
User

16. Token Auth Flow
Client (Browser) 3rd Service Facebook Server
User
Facebook
Token
Short
Lived Token

17. ...

18. Token Extend Flow

19. Token Extend Flow
Client (Browser) 3rd Service Facebook Server
Client Short Lived
Token
Short Lived
Token App
Secret
Long Lived Token

20. Token For Client Flow

21. Token For Client Flow
Client (Browser) 3rd Service Facebook Server
Short Lived
Token App
Secret
Https Client
Long Lived Token