Enabling PIN authentication on Windows 8 for domain logons

By default, PIN authentication is disabled for domain logons on Windows 8 Release Preview.

There is a new group policy setting for allowing pin authentication. The description reads:
This policy setting allows you to control whether a domain user can sign in using a PIN. If you enable this policy setting, a domain user can set up and sign in with a PIN. If you disable or don't configure this policy setting, a domain user can't set up and use a PIN. Note that the user's domain password will be cached in the system vault when using this feature.

The setting is located by running GPEdit.msc Then navigate to Computer Configuration -> Administrative Templates -> System -> Logon -> Turn on pin sign-in Set this setting to enabled to allow domain users to use a pin when signing in to the computer.