[Home](./index.md) > [@firebase/auth-types](./auth-types.md) > [RecaptchaVerifier](./auth-types.recaptchaverifier.md) > [type](./auth-types.recaptchaverifier.type.md) ## RecaptchaVerifier.type property The application verifier type. Signature: ```typescript readonly type: string; ``` ## Remarks For a reCAPTCHA verifier, this is 'recaptcha'.