[Home](./index.md) > [@firebase/auth](./auth.md) > [PhoneMultiFactorSignInInfoOptions](./auth.phonemultifactorsignininfooptions.md) > [multiFactorHint](./auth.phonemultifactorsignininfooptions.multifactorhint.md) ## PhoneMultiFactorSignInInfoOptions.multiFactorHint property The [MultiFactorInfo](./auth.multifactorinfo.md) obtained via [MultiFactorResolver.hints](./auth.multifactorresolver.hints.md). One of `multiFactorHint` or `multiFactorUid` is required. Signature: ```typescript multiFactorHint?: MultiFactorInfo; ```