Radio Frequency Identification (RFID) is a technology for wireless information exchange over short distances. Even though the technology itself was invented about 40 years ago, recent development in the field of low cost RFID devices began to finally show its potential. The possibility of adding (minimal) computing capabilities to every day’s objects will support the development of ubiquitous computing in the near future. Applying RFID transponders to consumer goods will be common, creating an ever present computing environment spanning all parts of every day’s life. Today RFID commerce already constitutes a vital and ever expanding market. Judging by evidence from recent years, RFID industry will continue its rapid growth during the following years. In such a developing market security and privacy become increasingly important. They define security as a composite of the attributes confidentiality, integrity and availability (also called CIA). In this context, confidentiality means the absence of unauthorized information disclosure. Integrity describes the absence of improper (meaning unauthorized) system and underlying data alteration. Availability in the security context is defined as continued readiness for authorized actions. Hence, a system with appropriate security should maximize the balance of the three attributes’ concurrent existence. Moreover, privacy is defined as a subset of confidentiality and integrity. In other words, consumers have the right to be sure that their data is not disclosed. It is becoming increasingly difficult to ignore the importance of security and privacy aspects in research and industrial appliance of RFID. There is surprisingly few literature review on RFID in a security and privacy context. Numerous reviews on security and privacy concerning health care, e-commerce and data-mining. The latter two are especially interesting, as essential privacy questions in these fields, LIKE” WHAT data is collected?” AND” HOW is data secured during transmission?” apply to RFID as well. The central factor underlying these topics in e-commerce is trust, a topic that can easily be anticipated in an RFID context. When RFID tagged objects hit the end-user market at a large scale, consumers’ willingness to provide data will likely depend on individual perceptions of trustworthiness, just as it does in e-commerce. Such perceptions will be directly based on the security and privacy provided.