Biometrics: What, Where and Why
Biometrics encompasses a variety of methods for ensuring identity based on physical or behavioral traits. Conventional identifying traits include fingerprints, face topology, iris structure, hand geometry, vein structure, voice, signature and keystroke recognition. Emerging technologies analyze characteristics such as gait, odor, and ear shape. Rather than being used in isolation, biometrics systems are increasingly becoming multimodal, an approach that serves both to increase security and overcome failure-to-enroll problems.