private void ClearPinCode()
{
GUIImage[] imagePins = new GUIImage[4] { imagePin1, imagePin2, imagePin3, imagePin4 };
for (int i = 0; i < 4; i++)
{
imagePins[i].Visible = false;
}
IsCorrect = false;
if (labelFeedback != null) labelFeedback.Label = " ";
}