diff --git a/lib/classes/databox/Field/VocabularyControl.class.php b/lib/classes/databox/Field/VocabularyControl.class.php
new file mode 100644
index 0000000000..118492406d
--- /dev/null
+++ b/lib/classes/databox/Field/VocabularyControl.class.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2010 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ *
+ * @package     Databox DCES
+ * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
+ * @link        www.phraseanet.com
+ */
+class databox_Field_VocabularyControl
+{
+
+  public static function get($type)
+  {
+    $classname = 'databox_Field_VocabularyControl_' . $type;
+
+    if(!class_exists($classname))
+    {
+      throw new \Exception('Vocabulary type not found');
+    }
+    
+    return new $classname();
+  }
+
+  public static function getAvailable()
+  {
+    return array(
+      new databox_Field_VocabularyControl_User()
+    );
+  }
+
+}
\ No newline at end of file
diff --git a/lib/classes/databox/Field/VocabularyControl/Interface.class.php b/lib/classes/databox/Field/VocabularyControl/Interface.class.php
new file mode 100644
index 0000000000..5f35dd2024
--- /dev/null
+++ b/lib/classes/databox/Field/VocabularyControl/Interface.class.php
@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2010 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ *
+ * @package     Databox DCES
+ * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
+ * @link        www.phraseanet.com
+ */
+interface databox_Field_VocabularyControl_Interface
+{
+
+  public static function getType();
+
+  public static function getName();
+
+  public static function find($query, \User_Adapter $for_user, \databox $on_databox);
+}
\ No newline at end of file
diff --git a/lib/classes/databox/Field/VocabularyControl/User.class.php b/lib/classes/databox/Field/VocabularyControl/User.class.php
new file mode 100644
index 0000000000..6ad02c1808
--- /dev/null
+++ b/lib/classes/databox/Field/VocabularyControl/User.class.php
@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2010 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ *
+ * @package     Databox DCES
+ * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
+ * @link        www.phraseanet.com
+ */
+class databox_Field_VocabularyControl_User implements databox_Field_VocabularyControl_Interface
+{
+
+  public function __construct()
+  {
+
+    return $this;
+  }
+
+  public static function getType()
+  {
+    return 'User';
+  }
+
+  public static function getName()
+  {
+    return _('Users');
+  }
+
+  public static function find($query, \User_Adapter $for_user, \databox $on_databox)
+  {
+
+    $user_query = new \User_Query(appbox::get_instance());
+
+    $users = $user_query
+        ->like(\User_Query::LIKE_EMAIL, $query)
+        ->like(\User_Query::LIKE_FIRSTNAME, $query)
+        ->like(\User_Query::LIKE_LASTNAME, $query)
+        ->like(\User_Query::LIKE_LOGIN, $query)
+        ->like_match(\User_Query::LIKE_MATCH_OR)
+        ->on_base_ids(array_keys($for_user->ACL()->get_granted_base(array('canadmin'))))
+        ->limit(0, 50)
+        ->execute()->get_results();
+
+    $results = array();
+
+    foreach ($users as $user)
+    {
+      $results[] = array(
+        'id'    => $user->get_id(),
+        'label' => $user->get_display_name(),
+      );
+    }
+
+    return $results;
+  }
+
+}
\ No newline at end of file