An informative, engaging introduction to biometrics. This book explores nine biometrics in detail, explaining how each works, where it's used, its pros and cons, and how it compares to other techniques. It also discusses privacy, security, and why we need methods of identification. An engaging and colorful design and playful illustrations alongside surprising anecdotes, historical context, and humor make this an enjoyable, in-depth look at a hot topic. Informational text features include sidebars, diagrams, sources, a glossary and an index.