---
title: sourceDevice
framework: SensorKit
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+]
path: sensorkit/srfetchresponse/sourcedevice
---

# sourceDevice

The source of the sample data.

## Declaration

```swift
var sourceDevice: SRSourceDevice? { get }
```

## Discussion

Discussion Represents the peripheral supplying data. Useful for distinguishing multiple source peripherals using a common device. Is nullable when no source information is available when providing sample data.