> What happens when you lose or brake your security key, is your PC locked forever Not sure about macOS, but on Windows it would most likely use Windows Hello,

> What happens when you lose or brake your security key, is your PC locked forever Not sure about macOS, but on Windows it would most likely use Windows Hello, even though they didn't mention it once in that blogpost. It doesn't allow you to have biometrics as the only method of logging in. You would have to setup a PIN too and the usual password will always be available. On Linux anything goes, depends on how you set it up. All that FIDO2 stuff is for browsers mainly, unless MS would meet them in the middle and allow FIDO2 without AD for system logins in upcoming updates. EDIT: This old preview shows Windows Hello https://www.youtube.com/watch?v=L2y3g_094TI https://www.youtube.com/watch?v=L2y3g_094TI