Biometric systems can be implemented following different schemas and also deployed in a huge variety of scenarios. Each of these combinations should be studied individually as to guarantee both, a proper functionality and a high level of preservation of the users' privacy. Obviously, covering all different possibilities in a single book chapter is impossible, so this chapter will first create a taxonomy of the possibilities, in order to choose a group of them to be studied in detail. As the chapter title shows, this chapter will be focussed on those implementations working in an unsupervised environment and where identification tokens, such as smart cards, can play an important role.
Biometric systems in unsupervised environments and smart cards: conceptual advances on privacy and security, Page 1 of 2
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