Use this policy setting to configure the use of special characters in the Microsoft Passport for work PIN gesture. Valid ...

Use this policy setting to configure the use of special characters in the Microsoft Passport for work PIN gesture.  Valid special characters for Microsoft Passport for work PIN gestures include: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~ .

If you configure this policy setting to "Allow", Microsoft Passport for Work allows users to use special characters in their work PIN.

If you configure this policy setting to "Disallow", Microsoft Passport for Work prevents users from using special characters in their work PIN.

If you configure this policy setting to "Required", Microsoft Passport for Work requires users to include at least one special character in their work PIN.

If you disable or do not configure this policy setting, Microsoft Passport for Work allows users to use special characters in their work PIN.