Videos below show IDmelon’s four different use cases including login to Windows 10 Azure AD connected as well as Microsoft account sign-in.
You can see how the user experience is different when a smartphone is paired with a PC using IDmelon Pairing Tool from when a PC has an IDmelon Reader plugged into its USB port and the user can enjoy the Tap & Login experience.

Note that login to Windows 10/Windows 11 is not available to individual users with personal/local accounts.