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# ASCredentialServiceIdentifier.IdentifierType

Possible values for the service identifier type.

```
enum IdentifierType
```

## Topics

### Identifier types

[`case URL`](/documentation/AuthenticationServices/ASCredentialServiceIdentifier/IdentifierType/URL)

A URL service identifier.

[`case domain`](/documentation/AuthenticationServices/ASCredentialServiceIdentifier/IdentifierType/domain)

A domain service identifier.

### Enumeration Cases

[`case app`](/documentation/AuthenticationServices/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.

### Initializers

[`init?(rawValue: Int)`](/documentation/AuthenticationServices/ASCredentialServiceIdentifier/IdentifierType/init(rawValue:))

## Relationships

### Conforms To

[`Sendable`](/documentation/Swift/Sendable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Hashable`](/documentation/Swift/Hashable)

---

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