voluptasmollitia/docs-exp/auth.phonemultifactorassertion.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/auth](./auth.md) &gt; [PhoneMultiFactorAssertion](./auth.phonemultifactorassertion.md)

## PhoneMultiFactorAssertion interface

The class for asserting ownership of a phone second factor. Provided by [PhoneMultiFactorGenerator.assertion()](./auth.phonemultifactorgenerator.assertion.md)<!-- -->.

<b>Signature:</b>

```typescript
export interface PhoneMultiFactorAssertion extends MultiFactorAssertion 
```
<b>Extends:</b> [MultiFactorAssertion](./auth.multifactorassertion.md)