Abstract: A locking system for a lift door, in particular a car door of a lift car and/or a shaft door, comprises a locking device which in an unlocked state enables opening of the lift door, and in a locked state restricts, in particular prevents opening of the lift door; a reference element; a counter element which interacts with the reference element, in particular mechanically, electrically, magnetically, acoustically and/or optically, in a prescribed measure when the lift car is located in a permissible position relative to a shaft door; a sensor for outputting a preferably electrical signal when the reference element and the counter element are interacting with one another; and a control device for transferring the locking device from the locked state into the unlocked state as a function of the signal, the reference element preferably being arranged on the shaft door.

Abstract: A locking system for a lift door, in particular a car door of a lift car and/or a shaft door, comprises a locking device which in an unlocked state enables opening of the lift door, and in a locked state restricts, in particular prevents opening of the lift door; a reference element; a counter element which interacts with the reference element, in particular mechanically, electrically, magnetically, acoustically and/or optically, in a prescribed measure when the lift car is located in a permissible position relative to a shaft door; a sensor for outputting a preferably electrical signal when the reference element and the counter element are interacting with one another; and a control device for transferring the locking device from the locked state into the unlocked state as a function of the signal, the reference element preferably being arranged on the shaft door.