See "Defend Yourself Against Identity Theft" in the "Did You Know..." section of Webopedia.
See also "How Biometrics Security Works" in the "Did You Know..." section of Webopedia.
Also see "How Fingerprint Scanners Work" in the "Did You Know..." section of Webopedia.

Biometric Consortium 
Extensive collection of information pertaining to the research, development, testing, evaulation, and application of biometric-based personal identification/verification technology. The Biometric Consortium serves as the U.S. Government's focal point for this technology.

Biometrics Catalog
A U.S. Government-sponsored database of information about biometric technologies including research and evaluation reports, news articles, vendors and consultants, government documents and legislative text.

BioPassword Security System Inc Web Site
Biometric security solution that utilizes a user's keystrokes for identification.