<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
</head>
<body>
<script type="text/javascript">
  window.addEventListener('load', function() {
    let o = [];
    o[0] = window.navigator;
    document.writeln('');
    // Since the USB token is enabled by default, this will pop up a notification that the
    // user can insert/interact with it. Since this is just a test, this won't happen. The
    // request will eventually time out.
    // Unfortunately the minimum timeout is 15 seconds.
    o[0].credentials.get({ publicKey: { challenge: new Uint8Array(128), timeout: 15000 } });
    o.forEach((n, i) => o[i] = null);
  });
</script>
</body>
</html>
