IC card including a memory, a password collating means and an access permitting means for permitting access to the memory
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United States of America Patent
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-
Feb 17, 1998
Grant Date -
N/A
app pub date -
Jul 14, 1995
filing date -
Mar 29, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A non-contact type IC card includes a programmable memory divided into a user area for storing application data, and a system area for storing a system password and a system password effective code indicating requirement of collation of the system password. If the system area of the memory includes the system password effective code, access to the system area by an external apparatus is permitted only when passwords are identical as a result of password collation. If the system area does not include the system password effective code, the access by the external apparatus can be permitted without the password collation.
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