diff --git a/src/Broker/Subscriber/SseSubscriber.php b/src/Broker/Subscriber/SseSubscriber.php
index b2967f1..66b99fc 100644
--- a/src/Broker/Subscriber/SseSubscriber.php
+++ b/src/Broker/Subscriber/SseSubscriber.php
@@ -25,7 +25,7 @@ class SseSubscriber implements SubscriberInterface
         $this->stream->write($message->toString());
     }
 
-    public function isAuthorized(): bool
+    public function isAuthenticated(): bool
     {
         return $this->request->getAttribute('authorized');
     }
diff --git a/src/Broker/Subscriber/SubscriberInterface.php b/src/Broker/Subscriber/SubscriberInterface.php
index b25e34d..9530aa1 100644
--- a/src/Broker/Subscriber/SubscriberInterface.php
+++ b/src/Broker/Subscriber/SubscriberInterface.php
@@ -6,11 +6,32 @@ use NoccyLabs\Mercureact\Broker\Message;
 
 interface SubscriberInterface
 {
+    /**
+     * Deliver a message to the subscriber.
+     * 
+     * @param Message $message
+     * @return void
+     */
     public function deliver(Message $message): void;
 
-    public function isAuthorized(): bool;
+    /**
+     * Returns true if the subscriber has athenticated.
+     * 
+     * @return bool true if the subscriber has provided valid credentials
+     */
+    public function isAuthenticated(): bool;
 
+    /**
+     * Returns the content of the JWT mercure.payload claim if present.
+     * 
+     * @return array|null
+     */
     public function getPayload(): ?array;
 
+    /**
+     * Get the unique subscriber ID, in the form 'urn:uuid:...'
+     * 
+     * @return string
+     */
     public function getId(): string;
 }
\ No newline at end of file
diff --git a/src/Broker/Subscriber/WsSubscriber.php b/src/Broker/Subscriber/WsSubscriber.php
index 0bb1060..ea96ccd 100644
--- a/src/Broker/Subscriber/WsSubscriber.php
+++ b/src/Broker/Subscriber/WsSubscriber.php
@@ -68,7 +68,7 @@ class WsSubscriber implements SubscriberInterface, EventEmitterInterface
         ], JSON_UNESCAPED_SLASHES));
     }
 
-    public function isAuthorized(): bool
+    public function isAuthenticated(): bool
     {
         return $this->token && $this->token->isValid();
     }
diff --git a/src/Broker/Topic.php b/src/Broker/Topic.php
index 048ad80..ce89fc5 100644
--- a/src/Broker/Topic.php
+++ b/src/Broker/Topic.php
@@ -39,7 +39,7 @@ class Topic
 
         foreach ($this->subscribers as $subscriber) {
             // Skip sending private messages to unauthorized subscribers
-            if ($message->private && !$subscriber->isAuthorized()) {
+            if ($message->private && !$subscriber->isAuthenticated()) {
                 continue;
             }
             // Deliver to the subscriber
diff --git a/tests/Broker/TopicTest.php b/tests/Broker/TopicTest.php
index e5bf3ff..7327f86 100644
--- a/tests/Broker/TopicTest.php
+++ b/tests/Broker/TopicTest.php
@@ -12,19 +12,11 @@ class TopicTest extends \PHPUnit\Framework\TestCase
 
     public function testPublicMessagesAreDeliveredToAllSubscribers()
     {
-        $authorizedSubscriber = new class implements SubscriberInterface {
-            public array $messages = [];
-            public function isAuthorized():bool { return true; }
-            public function deliver(Message $message):void { $this->messages[] = $message; }
-            public function getPayload(): ?array { return null; }
-            public function getId(): string { return ""; }
+        $authorizedSubscriber = new class extends _Subscriber {
+            public function isAuthenticated():bool { return true; }
         };
-        $unauthorizedSubscriber = new class implements SubscriberInterface {
-            public array $messages = [];
-            public function isAuthorized():bool { return false; }
-            public function deliver(Message $message):void { $this->messages[] = $message; }
-            public function getPayload(): ?array { return null; }
-            public function getId(): string { return ""; }
+        $unauthorizedSubscriber = new class extends _Subscriber {
+            public function isAuthenticated():bool { return false; }
         };
 
         $topic = new Topic("foo");
@@ -40,19 +32,11 @@ class TopicTest extends \PHPUnit\Framework\TestCase
 
     public function testPrivateMessagesAreNotDeliveredToUnauthorizedSubscribers()
     {
-        $authorizedSubscriber = new class implements SubscriberInterface {
-            public array $messages = [];
-            public function isAuthorized():bool { return true; }
-            public function deliver(Message $message):void { $this->messages[] = $message; }
-            public function getPayload(): ?array { return null; }
-            public function getId(): string { return ""; }
+        $authorizedSubscriber = new class extends _Subscriber {
+            public function isAuthenticated():bool { return true; }
         };
-        $unauthorizedSubscriber = new class implements SubscriberInterface {
-            public array $messages = [];
-            public function isAuthorized():bool { return false; }
-            public function deliver(Message $message):void { $this->messages[] = $message; }
-            public function getPayload(): ?array { return null; }
-            public function getId(): string { return ""; }
+        $unauthorizedSubscriber = new class extends _Subscriber {
+            public function isAuthenticated():bool { return false; }
         };
 
         $topic = new Topic("foo");
@@ -67,3 +51,11 @@ class TopicTest extends \PHPUnit\Framework\TestCase
     }
 
 }
+
+abstract class _Subscriber implements SubscriberInterface {
+    public array $messages = [];
+    public function isAuthenticated():bool { return false; }
+    public function deliver(Message $message):void { $this->messages[] = $message; }
+    public function getPayload(): ?array { return null; }
+    public function getId(): string { return ""; }
+};
\ No newline at end of file