<!--
{
  "availability" : [
    "iOS: 3.0.0 - 7.0.0",
    "iPadOS: 3.0.0 - 7.0.0",
    "macOS: 10.8.0 - 10.10.0",
    "visionOS: 1.0.0 - 1.0.0",
    "watchOS: 2.0.0 - 2.0.0"
  ],
  "documentType" : "symbol",
  "framework" : "GameKit",
  "identifier" : "/documentation/GameKit/GKSession/sessionID",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "GameKit"
    ],
    "preciseIdentifier" : "c:objc(cs)GKSession(py)sessionID"
  },
  "title" : "sessionID"
}
-->

# sessionID

A string used to filter the list of peers who are allowed to see your session.

```
var sessionID: String! { get }
```

## Discussion

The session ID is used by sessions configured as servers to advertise itself to other peers and by sessions configured as clients to search for compatible servers. The session ID should be the short name of an approved Bonjour service type.

---

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)