private static KeyUser HelloWorld(string ssoGuid, string mobilePasscode)
        {
            Guid sg, mp;
            sg = new Guid(ssoGuid);
            mp = new Guid(mobilePasscode);

            KeyUser kUser = new KeyUser(sg, mp);

            return kUser;
        }
        //[OperationContract]
        //[WebGet(ResponseFormat = WebMessageFormat.Xml,
        //    BodyStyle = WebMessageBodyStyle.Wrapped,
        //    UriTemplate = "key/xml/username={username}&password={password}&device={device}")]
        //public string AuthenticateKeyXML(string username, string password, string device)
        //{
        //    return HelloWorld(username, password, device).KeyGuid.ToString();
        //}
        //[OperationContract]
        //[WebGet(ResponseFormat = WebMessageFormat.Json,
        //    BodyStyle = WebMessageBodyStyle.Wrapped,
        //    UriTemplate = "key/json/username={username}&password={password}&device={device}")]
        //public KeyUser AuthenticateKeyJSON(string username, string password, string device)
        //{
        //    return HelloWorld(username, password, device);
        //}
        //[OperationContract]
        //[WebGet(ResponseFormat = WebMessageFormat.Xml,
        //    BodyStyle = WebMessageBodyStyle.Wrapped,
        //    UriTemplate = "mobile/xml/ssoGuid={ssoGuid}&mobilePasscode={mobilePasscode}")]
        //public KeyUser AuthenticateMobileXML(string ssoGuid, string mobilePasscode)
        //{
        //    return HelloWorld(ssoGuid, mobilePasscode);
        //}
        //[OperationContract]
        //[WebGet(ResponseFormat = WebMessageFormat.Json,
        //    BodyStyle = WebMessageBodyStyle.Wrapped,
        //    UriTemplate = "mobile/json/ssoGuid={ssoGuid}&mobilePasscode={mobilePasscode}")]
        //public KeyUser AuthenticateMobileJSON(string ssoGuid, string mobilePasscode)
        //{
        //    return HelloWorld(ssoGuid, mobilePasscode);
        //}
        private static KeyUser HelloWorld(string username, string password, string device)
        {
            KeyUser kUser = new KeyUser(username, password, device);

            return kUser;
        }