---
title: usb
framework: authenticationservices
role: symbol
role_heading: Type Property
path: authenticationservices/asauthorizationsecuritykeypublickeycredentialdescriptor/transport/usb
---

# usb

The USB transport type.

## Declaration

```swift
static let usb: ASAuthorizationSecurityKeyPublicKeyCredentialDescriptor.Transport
```

## See Also

### Getting the properties

- [allSupported](authenticationservices/asauthorizationsecuritykeypublickeycredentialdescriptor/transport/allsupported.md)
- [bluetooth](authenticationservices/asauthorizationsecuritykeypublickeycredentialdescriptor/transport/bluetooth.md)
- [nfc](authenticationservices/asauthorizationsecuritykeypublickeycredentialdescriptor/transport/nfc.md)