---
title: "sensorReaderWillStartRecording(_:)"
framework: sensorkit
role: symbol
role_heading: Instance Method
path: "sensorkit/srsensorreaderdelegate/sensorreaderwillstartrecording(_:)"
---

# sensorReaderWillStartRecording(_:)

Notifies the delegate when a reader starts recording.

## Declaration

```swift
optional func sensorReaderWillStartRecording(_ reader: SRSensorReader)
```

## Parameters

- `reader`: The reader that stopped recording.

## See Also

### Recording Data

- [sensorReader(_:startRecordingFailedWithError:)](sensorkit/srsensorreaderdelegate/sensorreader(_:startrecordingfailedwitherror:).md)
- [sensorReaderDidStopRecording(_:)](sensorkit/srsensorreaderdelegate/sensorreaderdidstoprecording(_:).md)
- [sensorReader(_:stopRecordingFailedWithError:)](sensorkit/srsensorreaderdelegate/sensorreader(_:stoprecordingfailedwitherror:).md)