If you are using Windows Hello to sign in your Windows 10 or above and you are using Chrome, you can add Windows Hello as a 2FA sign-in method:

1. Access to any secure application e.g. Microsoft 365 at https://www.microsoft365.com/ with your Chrome web browser
2. Enter your HKUST email address and password
3. When prompted for approve the 2FA, select Other Options
   
4. Scroll to the bottom of the page and select Manage devices and then approve the sign in (via the Duo mobile app or hardware token, etc.)
   
5. Select Add a device
   
6. Select the Windows Hello option 
   
7. Click Continue and scan your finger on the fingerprint reader
   
8. After the Passkey saved, click OK
   
9. Click Continue to add another device or rename the newly added device
   
10. Rename your newly added device, especially for accounts with multiple users, or select Back to login
    
11. After you selected Back to logn and if you want to use Windows Hello for your next 2FA sign-in, select the Windows Hello option and then approve the sign-in with your fingerprint or Windows Hello PIN.