---
title: ASCredentialServiceIdentifier.IdentifierType.app
framework: authenticationservices
role: symbol
role_heading: Case
path: authenticationservices/ascredentialserviceidentifier/identifiertype/app
---

# ASCredentialServiceIdentifier.IdentifierType.app

The service identifier represents an App ID. When a service identifier of this type is provided to your extension for saving a password, the ASCredentialServiceIdentifier object will have a non-nil displayName property that contains a user friendly name for the app.

## Declaration

```swift
case app
```