I believe reCAPTCHA's true purpose is to harvest user information and labor from websites.

C’est un fait, les CAPTCHAs existent uniquement pour nous faire travailler gratuitement. Ils ne servent pas à protéger les sites des robots, ces derniers résolvent les CAPTCHAs mieux que nous.

As the paper points out, image-labeling challenges have been around since 2004 and by 2010 there were attacks that could beat them 100 percent of the time.

For nearly two decades, CAPTCHAs have been widely used as a means of protection against bots. Throughout the years, as their use grew, techniques to defeat or bypass CAPTCHAs have continued to...