---
title: dataAccessEventMask
framework: security
role: symbol
role_heading: Type Property
path: security/seckeychaineventmask/dataaccesseventmask
---

# dataAccessEventMask

If the bit specified by this mask is set, your callback function is invoked when a process accesses a keychain item’s data.

## Declaration

```swift
static var dataAccessEventMask: SecKeychainEventMask { get }
```