private void SetInputFieldFocus(AirVRClientInputField inputField)
 {
     _inputUserID.focused  = inputField == _inputUserID;
     _inputAddress.focused = inputField == _inputAddress;
     _inputPort.focused    = inputField == _inputPort;
 }
    // handle AirVRClientInputField events
    public void OnInputFieldClick(AirVRClientInputField inputField)
    {
        SetInputFieldFocus(inputField);

        _numberPad.Show();
    }