"Fingers, hands, eyes, face, voice, all are in use and could relegate PIN-based security to history" (Orla O'Sullivan, senior editor/technology - ABA Banking Journal). http://www.banking.com/aba/cover_0197.htm
For the Hearing of the Subcommittee on Domestic and International Monetary Policy, Committee on Banking and Financial Services, U.S. House of Representatives One Hundred Fifth Congress On Biometrics and the Future of Money http://www.dss.state.ct.us/digital/legal1.htm