---
title: VNDetectBarcodesRequestRevision3
framework: vision
role: symbol
role_heading: Global Variable
path: vision/vndetectbarcodesrequestrevision3
---

# VNDetectBarcodesRequestRevision3

A constant for specifying revision 3 of the barcode detection request.

## Declaration

```swift
var VNDetectBarcodesRequestRevision3: Int { get }
```

## See Also

### Identifying Request Revisions

- [VNDetectBarcodesRequestRevision2](vision/vndetectbarcodesrequestrevision2.md)
- [VNDetectBarcodesRequestRevision1](vision/vndetectbarcodesrequestrevision1.md)