A survey of biometric modalities and their social impact

Biometrics Looks To Solve Identity Crisis (Electronic Design)

You see them in blockbuster movies and high-tech TV shows—biometric systems that rely on fingerprints, facial recognition, and other physical and behavioral data to provide identification. But these technologies have moved past the sci-fi genre, and even beyond the high-security arena. They’re hitting the mainstream now. In fact, you may even be using some of them already.

This is just the introductory paragraph. The whole article is worth reading.