Registers – Records – Conductive
Patent
1987-09-16
1989-05-16
Trafton, David L.
Registers
Records
Conductive
235380, 34082533, G06K 1906
Patent
active
048312452
ABSTRACT:
Information indicating the limit of size of area which is permitted to a service provider and an authentication code of the service supplier are stored in an IC card upon issuance. When a service is to be added, a service supplier is authenticated, and thereafter, acquistion of a data field area within a predetermined size of data field area is permitted. Thus, in the IC card for multiple services, upon addition of a new service after card issuance, the use of a remainder vacant area in the IC card by an unauthenticated service supplier and the exclusive use of the vacant area by a specific service supplier are prevented.
REFERENCES:
patent: 4656342 (1987-04-01), Ugon
patent: 4734568 (1988-03-01), Watanabe
patent: 4736094 (1988-04-01), Yoshida
patent: 4739295 (1988-04-01), Hayashi et al.
Jerome Svigals, "Smart Card"--The Ultimate Personal Computer, MacMilian Publishing Company, 1987, Revised from Jerome Svigals: "Smart Cards", The New Bank Cards, MacMillan Publishing Company, 1985, pp. 1-7, 124-127 and 132-135.
ISO/TC68/SC6/WG7, Part 1 to Part 6, is a part of ISO/TC68/SC6/WG7/N81, which was established on Oct. 22, 1985.
Fujitsu Limited
Trafton David L.
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