The FIDO Standard allows for devices and authentication schemes to be certified as UAF or U2F. This allows for flexible unified authentication, and optional second factor enrollment and registration.
- Chrome has built in FIDO U2F support.
- Firefox support is in progress. Extensions exist, however since direct hardware USB access is needed, users should take caution of loading these.
- Internet Explorer will not be implementing U2F and instead will support FIDO 2.0 Web API’s in Passport.