| 摘要 |
<p>In order to restrict access to content data held on a removable data carrier (83) or included in an electronic file, equipment (80,90) for accessing this content is arranged only to be enabled upon a location condition being satisfied. This condition is tested for by obtaining current-location data representing the current location of the equipment, and comparing the current-location data with authorised-location data representing a predetermined authorised location or locality for operation of the equipment. The authorized location data may be stored in the equipment itself, in a remote system (40), or in the removable data carrier or received data file.</p> |
