| 摘要 |
A present locking device is a locking device for locking/unlocking a lock of a door of a closed space, including: a first transmission antenna for transmitting a first signal to a range including an outside of the closed space; a second transmission antenna for transmitting a second signal to an inside of the closed space as a target; a key which transmits a first response signal when receiving the first signal and not receiving the second signal, and which transmits a second response signal when receiving the first signal and also receiving the second signal; a reception antenna for receiving at least the first response signal from the key; and a control unit for controlling whether locking or unlocking can be performed on the lock or not, based at least on whether the reception antenna receives the first response signal or not. |
