Personal Firewall For RFID Mediates Random Interrogations

This research site explains a concept personal firewall for RFID devices that would be carried on ones person. There is a growing concern that RFID tags as deployed are going to be interrogated remotely by neutral and hostile parties during normal day to day activities. Examples would be a RFID tag for a supermarket that was scanned by a roadside billboard and alerted you to a sale, maybe at a competitors store.

Other more sobering remote uses are more dangerous and would use the newly RFID enabled US passport to cherry pick victims for political retribution.

Any work done with RFID tags must be aware of these potentials.

Faculty of Science : Vrije Universiteit

The RFID Guardian is meant for personal use; it manages the RFID tags within physical proximity of a person (as opposed to managing RFID tags owned by the person, that are left at home). The RFID Guardian is portable. It should be PDA-sized, or better yet, could be integrated into a handheld computer or cellphone. The RFID Guardian is also battery powered. The RFID Guardian also performs 2-way RFID communications. It acts like an RFID reader, querying tags and decoding the tag responses, and it can also emulate an RFID tag, allowing it to perform direct in-band communications with other RFID readers.