[Home](./index.md) > [@firebase/auth-types](./auth-types.md) > [MultiFactorResolver](./auth-types.multifactorresolver.md) > [session](./auth-types.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; ```