---
title: largeBlob
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/aspasskeyregistrationcredentialextensionoutput-swift.struct/largeblob
---

# largeBlob

The output for a large binary object operation during passkey registration.

## Declaration

```swift
var largeBlob: ASAuthorizationPublicKeyCredentialLargeBlobRegistrationOutput? { get }
```

## See Also

### Inspecting properties

- [ASAuthorizationPublicKeyCredentialLargeBlobRegistrationOutput](authenticationservices/asauthorizationpublickeycredentiallargeblobregistrationoutput-swift.struct.md)
- [prf](authenticationservices/aspasskeyregistrationcredentialextensionoutput-swift.struct/prf.md)
- [ASAuthorizationPublicKeyCredentialPRFRegistrationOutput](authenticationservices/asauthorizationpublickeycredentialprfregistrationoutput-swift.struct.md)