diff --git a/src/Illuminate/Auth/Authenticatable.php b/src/Illuminate/Auth/Authenticatable.php
index d7578a3dcb1e..147d4179de67 100644
--- a/src/Illuminate/Auth/Authenticatable.php
+++ b/src/Illuminate/Auth/Authenticatable.php
@@ -31,6 +31,16 @@ public function getAuthIdentifier()
         return $this->{$this->getAuthIdentifierName()};
     }
 
+    /**
+     * Get the unique broadcast identifier for the user .
+     *
+     * @return mixed
+     */
+    public function getAuthIdentifierForBroadcasting()
+    {
+        return $this->getAuthIdentifier();
+    }
+
     /**
      * Get the password for the user.
      *
diff --git a/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php b/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php
index 1b7581119ba9..5205d29f3dba 100644
--- a/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php
+++ b/src/Illuminate/Broadcasting/Broadcasters/AblyBroadcaster.php
@@ -72,11 +72,14 @@ public function validAuthenticationResponse($request, $result)
 
         $channelName = $this->normalizeChannelName($request->channel_name);
 
+        $user = $this->retrieveUser($request, $channelName);
+        $broadcastIdentifier = method_exists($user, 'getAuthIdentifierForBroadcasting') ? $user->getAuthIdentifierForBroadcasting() : $user->getAuthIdentifier();
+
         $signature = $this->generateAblySignature(
             $request->channel_name,
             $request->socket_id,
             $userData = array_filter([
-                'user_id' => (string) $this->retrieveUser($request, $channelName)->getAuthIdentifier(),
+                'user_id' => (string) $broadcastIdentifier,
                 'user_info' => $result,
             ])
         );
diff --git a/src/Illuminate/Broadcasting/Broadcasters/PusherBroadcaster.php b/src/Illuminate/Broadcasting/Broadcasters/PusherBroadcaster.php
index 2ebe5da87f44..63a68f9c49c8 100644
--- a/src/Illuminate/Broadcasting/Broadcasters/PusherBroadcaster.php
+++ b/src/Illuminate/Broadcasting/Broadcasters/PusherBroadcaster.php
@@ -71,11 +71,14 @@ public function validAuthenticationResponse($request, $result)
 
         $channelName = $this->normalizeChannelName($request->channel_name);
 
+        $user = $this->retrieveUser($request, $channelName);
+        $broadcastIdentifier = method_exists($user, 'getAuthIdentifierForBroadcasting') ? $user->getAuthIdentifierForBroadcasting() : $user->getAuthIdentifier();
+
         return $this->decodePusherResponse(
             $request,
             $this->pusher->presence_auth(
                 $request->channel_name, $request->socket_id,
-                $this->retrieveUser($request, $channelName)->getAuthIdentifier(), $result
+                $broadcastIdentifier, $result
             )
         );
     }
diff --git a/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php b/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
index cf786955aeb7..e158563e7376 100644
--- a/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
+++ b/src/Illuminate/Broadcasting/Broadcasters/RedisBroadcaster.php
@@ -86,8 +86,11 @@ public function validAuthenticationResponse($request, $result)
 
         $channelName = $this->normalizeChannelName($request->channel_name);
 
+        $user = $this->retrieveUser($request, $channelName);
+        $broadcastIdentifier = method_exists($user, 'getAuthIdentifierForBroadcasting') ? $user->getAuthIdentifierForBroadcasting() : $user->getAuthIdentifier();
+
         return json_encode(['channel_data' => [
-            'user_id' => $this->retrieveUser($request, $channelName)->getAuthIdentifier(),
+            'user_id' => $broadcastIdentifier,
             'user_info' => $result,
         ]]);
     }
diff --git a/tests/Broadcasting/AblyBroadcasterTest.php b/tests/Broadcasting/AblyBroadcasterTest.php
index 81e172d1e2d4..74683de0a27b 100644
--- a/tests/Broadcasting/AblyBroadcasterTest.php
+++ b/tests/Broadcasting/AblyBroadcasterTest.php
@@ -123,6 +123,8 @@ protected function getMockRequestWithUserForChannel($channel)
                 ->andReturn(false);
 
         $user = m::mock('User');
+        $user->shouldReceive('getAuthIdentifierForBroadcasting')
+             ->andReturn(42);
         $user->shouldReceive('getAuthIdentifier')
              ->andReturn(42);
 
diff --git a/tests/Broadcasting/PusherBroadcasterTest.php b/tests/Broadcasting/PusherBroadcasterTest.php
index 18159f479fd7..cb5349227fef 100644
--- a/tests/Broadcasting/PusherBroadcasterTest.php
+++ b/tests/Broadcasting/PusherBroadcasterTest.php
@@ -161,6 +161,8 @@ protected function getMockRequestWithUserForChannel($channel)
                 ->andReturn(false);
 
         $user = m::mock('User');
+        $user->shouldReceive('getAuthIdentifierForBroadcasting')
+             ->andReturn(42);
         $user->shouldReceive('getAuthIdentifier')
              ->andReturn(42);
 
diff --git a/tests/Broadcasting/RedisBroadcasterTest.php b/tests/Broadcasting/RedisBroadcasterTest.php
index d381188b87e0..3345c7c26ef5 100644
--- a/tests/Broadcasting/RedisBroadcasterTest.php
+++ b/tests/Broadcasting/RedisBroadcasterTest.php
@@ -170,6 +170,8 @@ protected function getMockRequestWithUserForChannel($channel)
         $request->channel_name = $channel;
 
         $user = m::mock('User');
+        $user->shouldReceive('getAuthIdentifierForBroadcasting')
+             ->andReturn(42);
         $user->shouldReceive('getAuthIdentifier')
              ->andReturn(42);