---
title: identifier
framework: avkit
role: symbol
role_heading: Instance Property
path: avkit/avinterfacemediaselectionoptionsource/identifier
---

# identifier

Unique system identifier for this media option, used for programmatic selection and persistence across sessions.

## Declaration

```swift
var identifier: String { get }
```

## See Also

### Inspecting the option source

- [displayName](avkit/avinterfacemediaselectionoptionsource/displayname.md)
- [language](avkit/avinterfacemediaselectionoptionsource/language.md)