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# onWristState

A sensor that describes the watch’s position on the wrist.

```
static let onWristState: SRSensor
```

## Discussion

The [`sample`](/documentation/SensorKit/SRFetchResult/sample) type for this sensor is [`SRWristDetection`](/documentation/SensorKit/SRWristDetection)

You need to provide a reason to detect the watch position by adding the <doc://com.apple.documentation/documentation/BundleResources/Information-Property-List/NSSensorKitUsageDetail/SRSensorUsageWristDetection> dictionary to the <doc://com.apple.documentation/documentation/BundleResources/Information-Property-List/NSSensorKitUsageDetail> key in the information property list.

---

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