Abstract: The PIN code terminal, which has a wheel that may be turned to show alphanumeric characters in a small window which has a narrow field of view enabling the user to observe characters in the window while preventing the view of others and preventing possible onlookers of observing the selected characters from the user's hand or finger movements, as the user only depresses the wheel, which acts as an electric switch similar to the ENTER key on a PC keyboard, or by depressing another switch when the desired number/character is displayed in the window.