---
title: bundleIdentifier
framework: systemextensions
role: symbol
role_heading: Instance Property
path: systemextensions/ossystemextensionproperties/bundleidentifier
---

# bundleIdentifier

The bundle identifier of the extension.

## Declaration

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

## Discussion

Discussion This is the CFBundleIdentifier of the extension bundle.

## See Also

### Identifying the Extension

- [bundleVersion](systemextensions/ossystemextensionproperties/bundleversion.md)
- [bundleShortVersion](systemextensions/ossystemextensionproperties/bundleshortversion.md)