---
title: kSecValuePersistentRef
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecvaluepersistentref
---

# kSecValuePersistentRef

A key whose value is a persistent reference to the item.

## Declaration

```swift
let kSecValuePersistentRef: CFString
```

## Discussion

Discussion The corresponding value is of type CFData. The bytes in this object can be stored by the caller and used on a subsequent invocation of the application (or even a different application) to retrieve the item referenced by it.