Authentication is an important activity performed several times a day. We authenticate people in day-to-day routine and allow them a different levels of access to different resources.
Biometric authentication is a simple process of verifying your identity using your measurements or other unique characteristics of your body, then logging you in a service, an app, a device, and so on.
So what is biometrics? Simply put, it's a technology that uses your unique qualities, like your fingerprints or facial features, to identify, well, you! By using your unique biological characteristics, you can provide measurements.