Link added

Author: Spomky

security/access_token.rst

@@ -4,11 +4,12 @@
 How to use Access Token Authentication
 ======================================
 
-Access tokens are commonly used in API contexts. The access token is is obtained
+Access tokens are commonly used in API contexts. The access token is obtained
 through an authorization server (or similar) whose role is to verify the user identity
 and receive consent before the token is issued.
 
 Access Tokens can be of any kind: opaque strings, Json Web Tokens (JWT) or SAML2 (XML structures).
+Please refer to the `RFC6750`_: *The OAuth 2.0 Authorization Framework: Bearer Token Usage*.
 
 Using the Access Token Authenticator
 ----------------------------------
@@ -100,6 +101,11 @@ where participating browsers do not have access to the "Authorization" request h
 
 In other words: ``query_token`` and ``body_token` authenticators are not recommended.
 
+Customizing the Authenticators
+------------------------------
+
+
+
 Customizing the Success Handler
 -------------------------------
 
@@ -146,3 +152,5 @@ Then, configure this service ID as the ``success_handler``:
     If you want to customize the default failure handling, use the
     ``failure_handler`` option and create a class that implements
     :class:`Symfony\\Component\\Security\\Http\\Authentication\\AuthenticationFailureHandlerInterface`.
+
+.. _`RFC6750`: https://datatracker.ietf.org/doc/html/rfc6750