Dig into biometric identification the fun and friendly Dummies way! Biometrics - the science of identifying humans based on unique physical characteristics - is growing in popularity among security experts and security-minded organization. Once the realm of futurists and sci-fi, biometrics is now commonly used to reliably control whether to let you into a facility or allow you to use a computer system. Here's what it is, what it does, and how to use it.
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