Locking system, especially for motor vehicles

An electronic lock for a locking system, in particular electronic ignition lock for a motor vehicle, comprising:

• a holder into which an associated electronic key can be introduced, and having a switching element which can be actuated by introduction of the key into the holder and that produces a key inserted signal in the process, the key, which when in the holder, exchanges at least one coded operating signal with the lock, with the result that after positive evaluation of the operating signal the release of the lock for movement of the holder by means of the key into at least one actuating position can be triggered, wherein a blocking element, which executes an adjusting movement on introduction of the key into the holder or removal of the key from the holder, interacts with the holder in such a manner that the movement of the holder additionally to its release is made possible only when the key is correctly in the holder, wherein a separate transmitting means for the adjusting movement of the blocking element can be brought into operative connection with the blocking element at one end and with the switching element at the other end, and wherein the adjusting movement of the blocking element causes the transmitting means to exert a switching action on the switching element.