Radio frequency identification (RFID) is a generic term for technologies that use radio waves to automatically identify people or objects. With the characteristic of operating surreptitiously, RFID, compared with other identification technologies, makes the data collection activities harder to be noticed. Moreover, as being integrated into wireless sensor networks, RFID technologies could potentially realize the vision of Internet of Things. In the pervasive computing world, while the data processing more universal and invisible, our abilities to control our personal data and preserve our private space would certainly be weakened. In order to respond to the impacts of RFID on privacy, this thesis contends that the concept of privacy should be understood via the legal method of type thinking. Such approach demonstrates that the concept of privacy develops with social practices and therefore contains mulitple meanings, such as solitude, keeping secrecy, intimate relationship development and self`-determination on private affairs. Privacy covers partial dimension of autonomy and is embedded in the ambit of personal dignity, which ensures our private space and decisions to be respected. Hence, recognizing that privacy is the common pool of similar characteristics and that it involoves freedom of action as well as personality protection can helps us to discover the limitations of the existing law in dealing with RFID issues. Current personal data protection law, which puts pecial emphasis on personal data control, cannot appropriately protect personal privacy in pervasive computing era. Therefore, this thesis suggests that the code of conduct, especially the informed consent procedure be strengthened in the existing law, and that privacy impact assessment mechanism which requests the developers to deliberate and examine the implications of surveillance system from the beginning be introduced as well.