# User Linking

- [SENTNoOpUserLinker](/important-topics/sdk/api-reference/ios/user-creation-and-linking/user-linking/sentnoopuserlinker.md): A no-operation user linker. Use this linker to create an unlinked (anonymous) Sentiance user.
- [SENTUserLinkingResult](/important-topics/sdk/api-reference/ios/user-creation-and-linking/user-linking/sentuserlinkingresult.md)
- [SENTUserLinkingFailureReason](/important-topics/sdk/api-reference/ios/user-creation-and-linking/user-linking/sentuserlinkingfailurereason.md)
- [SENTUserLinkingError](/important-topics/sdk/api-reference/ios/user-creation-and-linking/user-linking/sentuserlinkingerror.md)
- [SENTUserLinkingCompletionHandler](/important-topics/sdk/api-reference/ios/user-creation-and-linking/user-linking/sentuserlinkingcompletionhandler.md)
- [SENTUserLinker](/important-topics/sdk/api-reference/ios/user-creation-and-linking/user-linking/metauserlinker.md)