In Google's recent security blog, the American company had announced that Android users will soon be able to log in to certain Google services with their fingerprint.
This applies to webservices within the Chrome browser as well as native apps, and will only require your fingerprint for authentication instead of inputting your password. The new feature is built on the FIDO2 standards, W3C WebAuthn and FIDO CTAP.
The update will roll out to devices with Android 7 and up gradually with Pixel devices the first to get it of course.
The Verge notes that you should be able to start testing out this feature on passwords.google.com, but it hasn't quite worked for us yet, so perhaps the update isn't quite available here yet. In any case, you can check yourself if you're eager.