[mag] 
| 1. | Computers. a plastic or paper card with a magnetizable layer on which data can be recorded and from which data can be read. |
| 2. | such a card used in access-control systems, as for automatically unlocking doors. |
| magnetic card n. A card, such as a bank card for use in an automated teller machine, that has a magnetizable strip or surface on which data can be recorded. |