| 摘要 |
<p>The present invention provides an electronic security device comprising means for receiving and outputting signals when in an authorised use state, a real time clock for determining whether a predetermined real time period has expired and, if so, seeking an authorisation, means for verifying the authorisation, and means for configuring the device into an unauthorised use state in the event that a correct authorisation is not received in time. A corresponding method and related devices are disclosed.</p> |
