[Home](./index.md) > [@firebase/auth](./auth.md) > [MultiFactorResolver](./auth.multifactorresolver.md) > [session](./auth.multifactorresolver.session.md) ## MultiFactorResolver.session property The session identifier for the current sign-in flow, which can be used to complete the second factor sign-in. Signature: ```typescript readonly session: MultiFactorSession; ```