diff --git a/ykval-synchronize b/ykval-synchronize
new file mode 100755
index 0000000..e655fee
--- /dev/null
+++ b/ykval-synchronize
@@ -0,0 +1,71 @@
+#!/usr/bin/php
+
+<?php
+
+# Copyright (c) 2010-2013 Yubico AB
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#
+#   * Redistributions in binary form must reproduce the above
+#     copyright notice, this list of conditions and the following
+#     disclaimer in the documentation and/or other materials provided
+#     with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+if($argc != 3 || !( $argv[2] == 'all' || preg_match('/^[cbdefghijklnrtuv]{0,16}$/', $argv[2]))) {
+  echo "Usage: ".$argv[0]." URL KEY\n\n";
+  echo "URL: URL of resync service.\n\n";
+  echo "KEY: Public identifier of a YubiKey to sync, or \"all\".\n\n";
+  echo "Usage example:\n\n";
+  echo $argv[0]." http://example.com/wsapi/2.0/resync ccccccccccdn\n";
+  exit(1);
+}
+
+$host = $argv[1];
+$yk = $argv[2];
+
+if(!preg_match('~^https?://~', $host)) {
+  #Allow just an IP or host
+  if(strpos($host, "/") == False) {
+    $host = $host."/wsapi/2.0/resync";
+  }
+  $host = "http://".$host;
+}
+
+$url = $host."?yk=".$yk;
+
+$ch = curl_init();
+
+curl_setopt($ch, CURLOPT_URL, $url);
+curl_setopt($ch, CURLOPT_USERAGENT, "YK-VAL");
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
+curl_setopt($ch, CURLOPT_FAILONERROR, true);
+
+$response = curl_exec($ch);
+if($response == False) {
+  die("error");
+}
+
+echo $response;
+
+curl_close($ch);
+
+?>