# registerUserIdentityType(typeID:type:) Registers a user identity type for use when deserializing the user identity from `Data`. ``` static func registerUserIdentityType(typeID: String, type: UI.Type) where UI : UserIdentity ``` ## Parameters `typeID` A unique type identifier for the user identity to register `type` The type of the user identity to register. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)