发明名称 |
Multi-user card system |
摘要 |
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.
|
申请公布号 |
US4837422(A) |
申请公布日期 |
1989.06.06 |
申请号 |
US19870094379 |
申请日期 |
1987.09.08 |
申请人 |
JUERGEN DETHLOFF |
发明人 |
DETHLOFF, JUERGEN;HINNEBERG, CHRISTIAN |
分类号 |
B42D15/02;B42D15/10;G06K17/00;G06K19/00;G06K19/10;G07F7/10;G07F7/12;G07F19/00 |
主分类号 |
B42D15/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|