Method for activating a data carrier having an inactive chip bonded to the data carrier for activating the data carrier
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United States of America Patent
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Feb 22, 1994
Grant Date -
N/A
app pub date -
Nov 18, 1991
filing date -
Nov 17, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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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