Minnesota Instructions for Restricted Identifiers and Confidential Financial Source Forms are forms used by the state of Minnesota to protect personally identifiable information (PIN) and confidential financial source information (CSI). There are two types of forms: the Restricted Identifier form and the Confidential Financial Source Form. The Restricted Identifier form is used to restrict access to PIN, such as Social Security numbers, driver's license numbers, and other personally identifiable data. The Confidential Financial Source Form is used to protect CSI, such as bank account numbers, credit card numbers, and other financial information. Both forms require the user to provide an authorized signature in order to access the information. These forms are designed to protect the privacy and security of Minnesota residents and businesses.