Method for activating a data carrier having an inactive chip bon

Details Method for activating a data carrier having an inactive chip bon Method for activating a data carrier having an inactive chip bon

1991-11-18

1994-02-22

Nelms, David C.

Registers

Systems controlled by data bearing records

Credit or identification card systems

380 23, H04L 900, G06F 1520

Patent

active

052889793

ABSTRACT:
Electronic memory chips have been introduced into plastic cards, for example, credit, checking and/or personal data cards. A method for activating the memory chips makes it possible to issue the plastic cards for a specific use and to later expand the card use by activating the chip that had been inactive up to then and had no significance for the standard use of the cards. Protective measures are implemented in order to make use of the cards possible only for authorized persons. Cards issued or counterfeited by unauthorized persons may also be recognized and eliminated.

REFERENCES:
patent: 4650975 (1987-03-01), Kitchener
patent: 4849614 (1989-07-01), Watanabe et al.
patent: 4885788 (1989-12-01), Takaragi et al.
patent: 5036461 (1991-07-01), Elliot et al.

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