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Kill and revive is possible.
This RFID tag design operates with something called Privacy Mode where the RFID upon exit from the Library can be under user control until returned.

Person Id is a much more serious issue as Identity Theft protection is critical.

From my knowledge of RFID, the "kill and revive" may not be a technological reality, at least not for passive tags. It might be better for the library community to ask for a solution to tags being read outside of the library, rather than asking for a particular technology. I suspect that should "kill and revive" turn out to be feasible, it may not be at a price that library's can afford. Let's encourage a low cost solution to the problem.

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