Google is giving users an option to login on certain google sites without the need of typing your password, which saves our time as well us it is secure. Most of the users today do not set a strong password and some even write their passwords somewhere in case they ever forget. Well, now at-least for some certain google sites you doo not have to worry about this.
Google says, “We are happy to announce that you can verify your identity by using your fingerprint or screen lock instead of a password when visiting certain Google services. The feature is available today on Pixel devices and coming to all Android 7+ devices over the next few days.”
Google further says,”These enhancements are built using the FIDO2 standards, W3C WebAuthn and FIDO CTAP, and are designed to provide simpler and more secure authentication experiences. They are a result of years of collaboration between Google and many other organizations in the FIDO Alliance and the W3C.
An important benefit of using FIDO2 versus interacting with the native fingerprint APIs on Android is that these biometric capabilities are now, for the first time, available on the web, allowing the same credentials be used by both native apps and web services. This means that a user only has to register their fingerprint with a service once and then the fingerprint will work for both the native application and the web service.”
If you want to read more about this in detail & want to know how does this work, here is the original Google blog: Source