Windows 10 Update Will Support More Password-Free Logins (engadget.com)
An anonymous reader writes: It's not just web browsers that are moving beyond passwords. Microsoft has revealed that Windows 10's next update will support the new FIDO 2.0 standard, promising password-free logins on any Windows 10 device managed by your company or office. You could previously use Windows Hello to avoid typing in a password, of course, but this promises to be more extensive -- you could use a USB security key to sign into your Azure Active Directory.
From the summary it looks like they are reverting to only using something you have, which is, normally, a lower level of security.