reCAPTCHA : More accessible CAPTCHA

We’ve probably been seen CAPTCHA (Completely Automated Turing Test To Tell Computers and Humans Apart) Ã¢â‚¬â€
colorful images with distorted text at the bottom of Web registration forms or comments form. CAPTCHAs are used by many websites to prevent abuse from “bots,” or automated programs usually written to generate spam. No computer program can read distorted text as well as humans can, so bots cannot navigate sites protected by CAPTCHAs.

From CAPTCHA to reCAPTCHA

So what is reCAPTCHA ?

reCAPTCHA is a project of the School of Computer Science at Carnegie Mellon University to channeling effort to solve CAPTCHA into reading books that digitized from physical paper that written before computer age. So every reCAPTCHA solved you’ve help digitized words that appears on reCAPTCHA. Yes, great idea and useful for world :). Beside that reCAPTCHA have another things that make reCAPTCHA most recomended to use instead of standard CAPTCHA.

These is some reasons why must use reCAPTCHA to prevent automated bots and spam on your site : (copied from reCAPTCHA website)

It’s Free! Yep, reCAPTCHA is free.
It’s Useful. Why waste the effort of your users? By using reCAPTCHA instead of other
CAPTCHA implementations, you are helping to digitize books.
It’s Easy. reCAPTCHA is a Web service. As such, adopting it is as simple as adding 4 lines of code
on your site. For many applications and programming languages such as Wordpress
and PHP reCAPTCHA also have easy-to-install plugins available.
reCAPTCHA generate and check the distorted images, so you don’t need to run costly image generation programs.
It’s Accessible. Most other implementations of CAPTCHAs block visually impaired individuals,
who cannot read images of distorted text. reCAPTCHA, on the other hand, has an audio test that allows blind people to
freely navigate your site.
It’s Secure. reCAPTCHA is run by the original creators of CAPTCHA and has the
highest security standards. Many other implementations of CAPTCHAs can be easily broken.