I attended the Wireless and Mobile Symposium in July 2004 and picked the sessions on RFID and personal data privacy.
Another session was delivered by Tony Lam, DC of PCO. Personal data privacy is his profession. He highlighted the use of RFID and LBS (location-based system) and their privacy concern: threat of building an individual movement profile, threat of being monitored and the potential loss of anonymity. Some guidelines to be proposed are: inform customers about the collection and use of such information, provide an opportunity to opt-out, ensure the security of information collected, provide uniform rules and privacy expectations.