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How Should We Handle Personal Data on RFID Tags?
What is the standard practice for storing personally identifiable information in a transponder's memory with regard to toll collection and traffic management?
There should be no personal information stored on an RFID tag. If you are using RFID for toll collection and traffic management, it would be a mistake to include any personally identifiable information in a transponder's memory, as you would be making it possible for someone to track another person without his or her knowledge.
The standard practice is to put a serial number on a tag and have this information be linked to an individual's account in a secure database. Whenever a car passed a toll-collection point, the serial number would be read and the account associated with that serial number would be charged the toll amount.
—Mark Roberti, Founder and Editor, RFID Journal
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