<!--
{
  "availability" : [
    "iOS: 26.5.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AccessoryTransportExtension",
  "identifier" : "/documentation/AccessoryTransportExtension/AccessoryFeatureSession",
  "metadataVersion" : "0.1.0",
  "role" : "Protocol",
  "symbol" : {
    "kind" : "Protocol",
    "modules" : [
      "Accessory Transport Extension"
    ],
    "preciseIdentifier" : "s:27AccessoryTransportExtension0A14FeatureSessionP"
  },
  "title" : "AccessoryFeatureSession"
}
-->

# AccessoryFeatureSession

```
protocol AccessoryFeatureSession : Sendable
```

## Topics

### Instance Properties

[`var accessory: ASAccessory`](/documentation/AccessoryTransportExtension/AccessoryFeatureSession/accessory)

The accessory associated with this feature session.

[`var sessionID: UUID`](/documentation/AccessoryTransportExtension/AccessoryFeatureSession/sessionID)

The session identifier for this capability session.

### Instance Methods

[`func send(message: AccessoryMessage) async throws`](/documentation/AccessoryTransportExtension/AccessoryFeatureSession/send(message:))

Send a message to the Transport Extension.

## Relationships

### Inherits From

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

---

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)