public GeoCoordinate GetLatestGeoCoordinateByDevice(string userName, string password, Device device)
        {
            GeoCoordinate geoCoor = null;

            try
            {
                ZiZhuJYLocationService.LocationServiceClient client = new LocationServiceClient();
                client.ClientCredentials.UserName.UserName = userName;
                client.ClientCredentials.UserName.Password = password;

                geoCoor = client.GetLatestGeoCoordinateByDevice(device);
                client.Close();
            }
            catch (Exception ex)
            {
                throw new FaultException(ex.GetDebugString());
            }

            return(geoCoor);
        }