There's one very big difference between biometric authentication, like fingerprint scanning or iris recognition, and more traditional password based security.
www.trustedreviews.com Biometric technologies include fingerprint, facial recognition, iris recognition, retinal scan, voice, and hand geometry.
en.wikipedia.org E-passports are biometric, meaning that they are authenticated through facial, fingerprint or iris recognition.
www.pastemagazine.com Potential applications include face, fingerprint and iris recognition for high-tech security as well as navigation systems in self-driving cars or industrial-product inspection.
www.cio.co.nz But, increasingly, law enforcement agencies are spending state and federal funds on iris recognition technology at jails to monitor inmates.
www.nextgov.com