---
title: BarcodeObservation.CompositeType
framework: vision
role: symbol
role_heading: Enumeration
path: vision/barcodeobservation/compositetype
---

# BarcodeObservation.CompositeType

Composite types for barcode requests.

## Declaration

```swift
enum CompositeType
```

## Topics

### Getting the composite types

- [BarcodeObservation.CompositeType.gs1TypeA](vision/barcodeobservation/compositetype/gs1typea.md)
- [BarcodeObservation.CompositeType.gs1TypeB](vision/barcodeobservation/compositetype/gs1typeb.md)
- [BarcodeObservation.CompositeType.gs1TypeC](vision/barcodeobservation/compositetype/gs1typec.md)
- [BarcodeObservation.CompositeType.linked](vision/barcodeobservation/compositetype/linked.md)

## Relationships

### Conforms To

- [Decodable](swift/decodable.md)
- [Encodable](swift/encodable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Getting the composite type

- [supplementalCompositeType](vision/barcodeobservation/supplementalcompositetype.md)