This policy setting allows you to control whether a domain user can sign in using a picture password. If you enable this ...

This policy setting allows you to control whether a domain user can sign in using a picture password.

If you enable this policy setting, a domain user can't set up or sign in with a picture password. 

If you disable or don't configure this policy setting, a domain user can set up and use a picture password.

Note that the user's domain password will be cached in the system vault when using this feature.