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

# largeBlob

Input for the WebAuthn large binary object extension in passkey registration requests.

## Declaration

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

## See Also

### Inputs

- [ASAuthorizationPublicKeyCredentialLargeBlobRegistrationInput](authenticationservices/asauthorizationpublickeycredentiallargeblobregistrationinput-swift.struct.md)
- [prf](authenticationservices/aspasskeyregistrationcredentialextensioninput-swift.struct/prf.md)
- [ASAuthorizationPublicKeyCredentialPRFRegistrationInput](authenticationservices/asauthorizationpublickeycredentialprfregistrationinput-swift.struct.md)