private void StartCamera()
    {
        _controllerUI.Loading(true);

        _deviceCamera.Enable(((bool success, string message) =>
        {
            _controllerUI.Loading(false);

            if (success)
            {
                _controllerUI.ShowTakePicture();
            }
            else
            {
                _controllerUI.ShowError(message);
            }
        }), _selectedCamera);

        if (WebCamTexture.devices.Length > 1)
        {
            _controllerUI.ShowSwitchButton(true);
        }
    }