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In a world where you can scan the veins in your hand to unlock a smartphone, how do you maintain control over personal data? Biometric authentication, the use of distinctive human features like iris patterns, fingerprints and even gait in lieu of a password, is gaining ground in the tech world.
Proponents tout its inherent, hard-to-replicate qualities as a security benefit, while detractors see the same features as an invasion of privacy. Both sides may be right.