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# qualityLevel

The resolution that the scanner uses to find data.

```
@MainActor final let qualityLevel: DataScannerViewController.QualityLevel
```

## Discussion

The default value is
[`DataScannerViewController.QualityLevel.balanced`](/documentation/VisionKit/DataScannerViewController/QualityLevel-swift.enum/balanced). To
increase recognition speed for larger items, you can set this property
to [`DataScannerViewController.QualityLevel.fast`](/documentation/VisionKit/DataScannerViewController/QualityLevel-swift.enum/fast). For
smaller items, you can set this property to
[`DataScannerViewController.QualityLevel.accurate`](/documentation/VisionKit/DataScannerViewController/QualityLevel-swift.enum/accurate) but it
may impact the recognition speed.

---

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