Its not just whether the API is available but whether its practical to use. I'm not sure which browsers recognize or support fingerprint readers, though all the

Its not just whether the API is available but whether its practical to use. I'm not sure which browsers recognize or support fingerprint readers, though all the implementations seem to support usb u2f. Feels like a total failure to launch that the spec doesn't recommend the use of browser accounts as credential providers. Every single major browser has an associated web account with it (Firefox Account, Google account, Microsoft account, Apple id, etc) and could trivially use those accounts as authentication providers.