Reusable electronic tag for secure data accumulation

Communications: electrical – Selective – Interrogation response

Reexamination Certificate

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Details

C340S010520, C340S005210, C340S005230, C713S152000

Reexamination Certificate

active

06980087

ABSTRACT:
A reusable electronic tag having a plurality of memory locations to allow a user to write information onto the tag. After a memory location is written, it becomes write-protected, preventing the written content from being altered or deleted by an unauthorized user. By granting a user access right to certain memory locations, it is possible to restrict the user's ability to access the memory location depending on the granted access type and the level of restriction set for the memory location. A user with a valid password is allowed to read and write a memory location. Such a user may be allowed to clear the memory locations so that the tag can be reused.

REFERENCES:
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patent: 5966082 (1999-10-01), Cofino et al.
patent: 5974500 (1999-10-01), Maletsky et al.
patent: 6693544 (2004-02-01), Hebbecker
patent: 6753759 (2004-06-01), Stegmaier et al.

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