FrontMatter -- Preface -- Acknowledgment of Reviewers -- Contents -- Executive Summary -- 1 Introduction and Overview -- 2 Authentication in the Abstract -- 3 Privacy Challenges in Authentication Systems -- 4 Security and Usability -- 5 Authentication Technologies -- 6 Authentication, Privacy, and the Roles of Government -- 7 A Toolkit for Privacy in the Context of Authentication -- APPENDIXES -- Appendix A Biographies of Committee Members and Staff -- Appendix B Briefers to the Study Committee -- Appendix C Some Key Concepts -- What Is CSTB?.