---
title: LAPolicy.deviceOwnerAuthenticationWithCompanion
framework: localauthentication
role: symbol
role_heading: Case
path: localauthentication/lapolicy/deviceownerauthenticationwithcompanion
---

# LAPolicy.deviceOwnerAuthenticationWithCompanion

Device owner will be authenticated by a companion device e.g. Watch, Mac, etc.

## Declaration

```swift
case deviceOwnerAuthenticationWithCompanion
```

## Discussion

Discussion Companion authentication is required. If no nearby paired companion device can be found, LAErrorCompanionNotAvailable is returned.         Users should follow instructions on the companion device to authenticate.