Introducing Edge Master Password | New feature
it's this feature: it's controlled feature rollout available in Edge canary, was added few versions ago. this helps your passwords stay safe, by requiring you to enter your Windows Pin/Password when you want to autofill your credentials on a web page. using the same strong authentication method Windows uses to secure your login screen, secure your disks pre-logon etc. next in line is this I'm already seeing some bits of it in Edge canary, but not fully implemented just yet.
