Secure data tagging systems

Details Secure data tagging systems Secure data tagging systems

2007-03-06

2007-03-06

Holloway, III, Edwin C. (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S005260, C340S005610, C235S382500

Reexamination Certificate

active

10863144

ABSTRACT:
A system is disclosed for secure communication between an interrogator and an RFID tag. The system includes means for singulating the tag in a population of RFID tags and means for extracting from the tag, identity data adapted to uniquely identify the tag. The system further includes means for securely communicating the identity data to a secure database, means for providing authentication data by the database and means for securely communicating the authenticating data to the interrogator. The system also includes means for providing a further communication between the tag and the interrogator, and wherein at least one stream of data between the tag and the interrogator includes random data generated via a random physical process. The tag and database may each include means for maintaining a count of secure authentications. The count may be separately maintained by the tag and database and may be incremented following each secure authentication. A method for secure communication between an interrogator and an RFID tag is also disclosed.

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