With the Firefox 60 release on May 9, Firefox became the first major browser to support the Web Authentication API. This API enables users to avoid text-based passwords for websites and instead uses a local device with a biometric check or private PIN to generate a secure cryptographic identifier. Support for the API is in development for Chrome and Edge, and under consideration for Safari.
The specification is coming out of the FIDO Alliance in collaboration with W3C. According to the FIDO Alliance website:
The specifications and certifications from the FIDO Alliance enable an interoperable ecosystem of hardware-, mobile- and biometrics-based authenticators that can be used with many apps and websites.