Microsoft is working on developing passwordless signings to windows 10 which will be available in the next version of Windows 10. Microsoft will just text a code to your phone number when you sign in for the first time to verify your authenticity. It’s all part of Microsoft’s stated goal: “a world without passwords.” where Microsoft accounts will work without passwords.
This feature is already available in Insider build 18309. It will be stable and available to everyone in the next version of Windows 10. the project is codenamed 19H1 and will be available sometime around April 2019. Passwordless logins were first seen for Windows 10 Home back in Insider build 18305, but are now available on all editions of Windows.
Here’s how it works: when you go to create a Microsoft account, you just provide your phone number which will create the account without a password. When you sign into Windows 10 with that phone number, Microsoft will text you a code that you enter on the sign-in screen. After that, you can use Windows Hello to set up a PIN, fingerprint, or face login method. You never have to type a password again, your account doesn’t even have one! And you don’t have to enter a code sent via text every time you sign in, either. You only have to receive a code on your phone when you sign in on a new PC.
To use this feature on the latest Insider builds of Windows, you’ll need a Passwordless Microsoft account.
You can create a password-less phone number account in a mobile app like Word on your iOS or Android device to try it out. Simply go to Word and sign up with your phone number by entering your phone number under “Sign in or sign up for free”.