| 摘要 |
<p>An electronic locking device which is particularly useful for safes in a hotel room comprises an unlocking circuit (17) actuated when a code on a magnetic card which acts as the "key" is read by a card reader (11) forming part of the device agrees with an unlocking code stored in the memory (14) of the device. The unlocking code from the card is set in memory when the memory is enabled and the magnetic card is loaded into the card reader (11) for a plurality of times within a relatively short pre-selected time interval.</p> |
