Privacy issues on biometric systems

In the XXIst century, there is a strong interest on privacy issues. Technology permits obtaining personal information without individuals' consent, computers make it feasible to share and process this information and this can bring about damaging implications. In some sense, biometric information is personal information, so it is important to be conscious about what is true and what is false when some people claim that biometrics is an attempt to impinge upon an individual' privacy. In this paper, key points related to this matter are dealt with.