Lock device, lock device controller, and electronic key system

A lock device is arranged in a vehicle (1) including an inlet (34) and an operation switch (57b). The vehicle is configured to perform a predetermined control operation corresponding to the operation switch (57b) when the condition that verification of an authentic electronic key (80) through wireless communication has been accomplished and the condition that a normal operation of the operation switch (57b) has been performed are both satisfied. The lock device includes a lock mechanism (32; 33) that locks a locking subject (10; 36) related with the inlet. A controller (11) controls the lock mechanism to switch the locking subject between a lock state and an unlock state when the condition that the verification of the authentic electronic key has been accomplished and the condition that a special operation of the operation switch (57b) has been performed are both satisfied.