| 摘要 |
<p>Provided is a crime prevention system which enables a user to check information whether a gate is opened or closed, and which includes a key capable of opening or closing a lock of the gate. The key includes a receiving unit configured to wirelessly receive the information whether the gate is opened or closed; and a notifying unit configured to let the user be notified of the information whether the gate is opened or closed in a visual, tactile, or auditory manner.</p> |
