WebAuthn is [supported in Firefox 60, and supported shortly in Chrome 67 and Edge 18](https://caniuse.com/#feat=webauthn), providing a cross-browser support that is the spiritual successor to U2F. It's possible to [migrate U2F users and their credentials to WebAuthn](https://www.w3.org/TR/webauthn/#sctn-appid-extension), but also possible to run U2F and WebAuthn side-by-side as separate modules. MDN: https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API Spec: https://www.w3.org/TR/webauthn/
WebAuthn is supported in Firefox 60, and supported shortly in Chrome 67 and Edge 18, providing a cross-browser support that is the spiritual successor to U2F.
It's possible to migrate U2F users and their credentials to WebAuthn, but also possible to run U2F and WebAuthn side-by-side as separate modules.
MDN: https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API
Spec: https://www.w3.org/TR/webauthn/