For improved security and a more seamless sign-in experience, you can now enable passwordless sign-in for Microsoft accounts on your Windows 10 device starting with Windows 10 build 18936.
Enabling passwordless sign-in will switch all Microsoft accounts on your Windows 10 device to only allow modern authentication with Windows Hello Face, Fingerprint, or PIN.
Enabling passwordless sign-in will remove the password and picture password sign-in options for all Microsoft accounts on the sign-in screen and in Accounts > Sign-in options > Settings.
This tutorial will show you how to enable or disable passwordless sign-in to only allow Windows Hello sign-in for all Microsoft accounts on your Windows 10 device.