Abstract: An opening in a front panel of an automated teller machine (ATM) normally permits a portion of an internal mechanism to protrude therethrough to receive customer cards or for similar purposes. When the internal mechanism of the ATM is withdrawn for servicing, the protruding portion of the mechanism is withdrawn from the opening. A vertically slidable door is provided to close said opening whenever said protruding portion is withdrawn, in order to prevent access to the interior of the ATM by unauthorized persons. The door is operated by mechanism responsive to the movement of the internal mechanism.

Abstract: A membrane type keyboard associated with a data terminal device is disclosed which is sealed to prevent the introduction into the interior elements of the keyboard of water or other types of liquid contaminants encountered during the operation of the terminal device. The keyboard includes an outer frame member which forms an air chamber extending around the perimeter of a raised keyboard, thereby preventing any liquid spilled on the keyboard from reaching the interior elements of the keyboard. The frame member is easily removable from the keyboard, allowing the interior elements to be replaced or exchanged in accordance with the business environment in which the terminal device is to be used.