Method for operating installations comprising chip-card-driven c

Details Method for operating installations comprising chip-card-driven c Method for operating installations comprising chip-card-driven c

1992-02-25

1994-03-29

Willis, Davis L.

Registers

Systems controlled by data bearing records

Credit or identification card systems

G06K 500

Patent

active

052987248

ABSTRACT:
The invention relates to a method for the coding and the availability of a chip card, which is provided as memory storage in a programmable control system. During the initial operation of a chip card with a control system a coding process is performed. The coding process specifies the chip card to the control system and encodes the chip card. The chip card can only be copied after the coding process. However, the copy can only be used in the control system on which the original or master chip card was coded. In the event of a defect in the system hardware, a chip card may be used in a second control system so that the total system installation remains available. The second control system remains functionally operable with a chip card for a time-limited period if the code of the chip card does not coincide with the code of the control system.

REFERENCES:
patent: 4808802 (1989-02-01), Kano

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