| 摘要 |
<p>A magnetic card which can be used as a key for operating automatic doors or gates or for actuating electronic recognition or presence-detection devices in general has a protective cover (5) having two substantially rigid main portions (6) which are joined along one side and are adapted to cover the two faces of the card (1) at least partially. The cover (5) is articulated to the card about an axis (9) perpendicular to the plane of the card and adjacent one end thereof, so that the card can adopt any position between a position in which it is retracted into the cover and a fully extended position in which the card (1) substantially forms an extension of the cover (5). <IMAGE></p> |
