---
title: largeBlob
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/asauthorizationplatformpublickeycredentialregistration/largeblob-5nvj9
---

# largeBlob

The request’s binary large object value.

## Declaration

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

## See Also

### Accessing registration properties

- [attachment](authenticationservices/asauthorizationplatformpublickeycredentialregistration/attachment.md)