发明名称 |
Method for activating a data carrier having an inactive chip bonded to the data carrier for activating the data carrier |
摘要 |
Electronic memory chips have been introduced into plastic cards, for example, credit, checking and/or personal data cards. A method for activating the memory chips makes it possible to issue the plastic cards for a specific use and to later expand the card use by activating the chip that had been inactive up to then and had no significance for the standard use of the cards. Protective measures are implemented in order to make use of the cards possible only for authorized persons. Cards issued or counterfeited by unauthorized persons may also be recognized and eliminated.
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申请公布号 |
US5288979(A) |
申请公布日期 |
1994.02.22 |
申请号 |
US19910793606 |
申请日期 |
1991.11.18 |
申请人 |
ANGEWANDTE DIGITAL ELEKTRONIK GMBH |
发明人 |
KREFT, HANS-DIEDRICH |
分类号 |
G06K19/07;G06K19/073;G07F7/10;(IPC1-7):H04L9/00;G06F15/20 |
主分类号 |
G06K19/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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