A CAPTCHA or Captcha is a type of challenge-response test used in computing to ensure that the response is not generated by a computer. The process usually involves one computer (a server) asking a user to complete a simple test which the computer is able to generate and grade.
Because other computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human. CAPTCHAs are used by many websites to prevent abuse from "bots," or automated programs usually written to generate spam.
About 200 million CAPTCHAs are solved by humans around the world every day*. In each case, roughly ten seconds of human time are being spent. Individually, that's not a lot of time, but in aggregate these little puzzles consume more than 150,000 hours of work each day.
"What if we could use this ten second opportunity to advocate for the Millenium Development Goals (or any other issue) while we have the attention of the person completing the CAPTCHA?"
FACTCHA does exactly that by picking random data from the MDG database and presenting it to the user in a fun-filled way.
A pictorial representation of the MDG goals is presented and the user has to drag the highlighted one to the grey circle. If successful, the form reloads to allow the submission but at the same time loads a random fact about the progress of countries on the MDGs for the user to learn.
In order to achieve the goal of reaching the MDG goals by the targetted 2015, there is need to advocate the importance of working towards achieiving the MDGs and to keep reporting on the progress of where countries have reached.
Webmasters who run websites that suffer from problems with spam are able use FACTCHA to tackle the spam problem but at the same time they educate the masses on facts and figures about the MDGs straight from the World Bank's MDG data set! :D
If you have already signed up for a set of keys here, you now need to install FACTCHA on your site. Installation is done in two parts. First, you need to download the FACTCHA Scripts and then read the HOW-TO Documentation to configure your forms.
See here for further information: http://demo.modernization.co.ke/factcha/rgstr/
* Information on amount of CAPTCHAs solved daily is from Google Inc. via their website www.recaptcha.net