Multi-user card system

Details Multi-user card system Multi-user card system

1987-09-08

1989-06-06

Pellinen, A. D.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235379, 902 26, 34082533, G06F 1530

Patent

active

048374229

ABSTRACT:
A card combination which is issued to a single cardholder can be reprogrammed by the cardholder for use by a sub-user to a desired extent with regard to value and time. The cardholder uses a master enabling code to access the programming mechanism. He/she assigns a sub-PIN for use by the sub-user and opens a subordinate account for the allowed credit value within card's total credit value. This subordinate account can be accessed using the sub-PIN. A limited term can be selected during which any transaction using the sub-PIN and using the subordinate account can be conducted. After the expiration of that term the sub-PIN is automatically erased and any balance in the suborinate account is re-credited to the main credit account of the card. Such a multi-user card can also be used in conjunction with a program for varying the value of units stored in the credit account.

REFERENCES:
patent: 4192006 (1980-03-01), Hausdorff
patent: 4204113 (1980-05-01), Giraud et al.
patent: 4454414 (1984-06-01), Benton
patent: 4523087 (1985-06-01), Benton
patent: 4523297 (1985-06-01), Ugon et al.
patent: 4634845 (1987-01-01), Hale et al.
patent: 4656342 (1987-04-01), Ugon
patent: 4705211 (1987-11-01), Honda et al.
patent: 4734568 (1988-03-01), Watanabe
patent: 4766293 (1988-08-01), Boston

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