---
title: identifier
framework: contacts
role: symbol
role_heading: Instance Property
path: contacts/cnlabeledvalue/identifier
---

# identifier

A unique identifier for the labeled value object.

## Declaration

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

## Discussion

Discussion It is recommended that you use the identifier when searching for a previously known labeled value object in a re-fetched contact. The identifier can be persisted between the app launches.