IC card and read/write control method for controlling data reado

Details IC card and read/write control method for controlling data reado IC card and read/write control method for controlling data reado

1991-09-11

1994-02-08

Nelms, David C.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235487, G06K 500

Patent

active

052850552

ABSTRACT:
In an IC card of this invention, a plurality of password numbers are previously stored and data can be read out from the IC card and written into the IC card when any one of the plurality of password numbers is input. Further, data readout and write-in with respect to the IC card are partially limited according to the input password number.

REFERENCES:
patent: 4734568 (1988-03-01), Watanabe
patent: 4849614 (1989-07-01), Watanabe et al.
patent: 4853522 (1989-08-01), Ogasawara
patent: 4882474 (1989-11-01), Anderl et al.
patent: 4885788 (1989-12-01), Takaragi et al.
patent: 4928001 (1990-05-01), Masada
patent: 5039850 (1991-08-01), Yamaguchi

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