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en.wikipedia.org/wiki/CAPTCHA

A CAPTCHA is a type of challenge-response test used in computing to determine whether or ..... The Captcha Project · Inaccessibility of CAPTCHA: Alternatives to Visual Turing Tests on the Web, a W3C Working Group Note. Captcha History ...

en.wikipedia.org/wiki/ReCAPTCHA

reCAPTCHA is a CAPTCHA-like system designed to establish that a computer user is human ... It works with Project Gutenberg to digitize public domain material and uses methods quite different from reCAPTCHA. The reCAPTCHA program ...

www.captcha.net

A free, secure and accessible CAPTCHA implementation is available from the reCAPTCHA project. Easy to install plugins and controls are available for ...

www.cylab.cmu.edu/research/projects/2008/captcha-project.html

Abstract. The CAPTCHA Project. A CAPTCHA is a program that can generate and grade tests that: Most humans can pass. Current computer programs can't ...

www.cylab.cmu.edu/partners/success-stories/recaptcha.html

This is a success story about CyLab's reCAPTCHA project. ... A CAPTCHA (short for Completely Automated Public Turing Test To Tell Computers and Humans ...

www.google.com/recaptcha

reCAPTCHA uses an advanced risk analysis engine and adaptive CAPTCHAs to keep automated software from engaging in abusive activities on your site.

emiliovavarella.com/archive/thecaptchaproject

THE CAPTCHA PROJECT aims to highlight the undefined boundaries between humans and machines, originals and copies. The project started as a reflection ...

www.drupal.org/project/captcha

Jun 9, 2004 ... The CAPTCHA module provides this feature to virtually any user ... Stable releases for this project are covered by the security advisory policy.

www.freelancer.com/work/google-captcha-job

Search for jobs related to Google captcha job or hire on the world's largest ... The Main project Idea is to take inputs from an online form which will ask various ...