Biometric technology for information security?

Basically, biometrics is the science and technology of measuring and analyzing biological data. In information technology, biometrics refers to technologies that measure and analyze human body characteristics, such as DNA, fingerprints, eye retinas and irises, voice patterns, facial patterns and hand measurements, for authentication purposes.I think the use of biometrics in the security world is smart, but dumb at the same time. It is very smart, because people can memorize your passwords and key codes not your face, eyes or your hair samples. It is also very dumb, because if the system is hacked or gets overridedĀ  you can easily lose basically everything. I feel like you should use both, it would be more safe in the long run.