The CAPTCHA system of Internet forms will also be used for the digitization of books. It was originally designed to combat automatic spam based on distorted characters. The system requests the user to decode a distorted sequence of characters in each form. Computer scientists at the Carnegie Mellon University of the United States have proposed to expand the system to help digitize older books. The new ReCAPTCHA system, in addition to the traditional distorted succession, will require the user to decode a distorted word to be digitized.