+The functions below allow a binding involved in the platform security
+to explicitely check a permission of a client or to get the calling
+application identity.
+
+```C
+/*
+ * Check whether the 'permission' is granted or not to the client
+ * identified by 'req'.
+ *
+ * Returns 1 if the permission is granted or 0 otherwise.
+ */
+int afb_req_has_permission(struct afb_req req, const char *permission);
+
+/*
+ * Get the application identifier of the client application for the
+ * request 'req'.
+ *
+ * Returns the application identifier or NULL when the application
+ * can not be identified.
+ *
+ * The returned value if not NULL must be freed by the caller
+ */
+char *afb_req_get_application_id(struct afb_req req);
+
+/*
+ * Get the user identifier (UID) of the client application for the
+ * request 'req'.
+ *
+ * Returns -1 when the application can not be identified.
+ */
+int afb_req_get_uid(struct afb_req req);
+```
+