On May 12, 2009, the European Commission issued a non-binding recommendation on the implementation of privacy and data protection principles in applications supported by radio-frequency identification (RFID). It advocates data protection measures, including opt-in policies, notification of consumers on the use of their personal data, and development of a common European sign for products with implemented smart chips. Recommendation C(2009) 3200 final is available here, and the FAQs on RFID here.