| 摘要 |
The present invention relates to a control method and a control device during fabrication of a series of cards (2), preferably credit or ledger cards, in which series each card (2) has hobbed symbols (3) which represent individual information (4-6) about the card possessor or card holder, e.g. his or her name and card number. The hobbed symbols (3) on each card (2) in the series are read by a laser emitter//receiver (8) emitting laser light (10) towards the cards (2) and receiving laser light (12) from said cards. Information obtained during reading and representing the hobbed symbols (3) of the cards (2), is compared with predetermined information for controlling if said informations correspond. An error is indicated if said informations do not correspond. |
