diff --git a/auth.php b/auth.php
index db6fada..df144a8 100644
--- a/auth.php
+++ b/auth.php
@@ -15,6 +15,7 @@ $realm = 'GPS Tracker';
 if (empty($_SERVER['PHP_AUTH_DIGEST'])) {
  header('HTTP/1.1 401 Unauthorized');
  header('WWW-Authenticate: Digest realm="'.$realm.
+        '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"'); 
 
  die('Authentication failed.');
 }