<!--
{
  "availability" : [
    "iOS: 6.0.0 -",
    "iPadOS: 6.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.9.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CoreBluetooth",
  "identifier" : "/documentation/CoreBluetooth/CBMutableCharacteristic/permissions",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Core Bluetooth"
    ],
    "preciseIdentifier" : "c:objc(cs)CBMutableCharacteristic(py)permissions"
  },
  "title" : "permissions"
}
-->

# permissions

The permissions of the characteristic value.

```
var permissions: CBAttributePermissions { get set }
```

## Discussion

Characteristic permissions represent the read, write, and encryption permissions for a characteristic’s value. For a complete list and discussion of the available characteristic permissions, see [`CBAttributePermissions`](/documentation/CoreBluetooth/CBAttributePermissions).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)