Developing internet portals for our clients made us think of a reliable protection against all sort of “spamming bots” or other automated programs that could seriously abuse their websites.
The only reasonable solution to us was using text-based CAPTCHAs but they turned out to be too annoying for most of the users. They simply were not able to read the distorted text in the box and reloading the page a few times took too long.
That is when we came up with a completely innovative solution to make sure that the sites are not navigated by “bots”. We created an image-based YELLOcaptcha that does not require the user to rewrite the text, but instead, select the indicated images from the set of available pictures. This protection proved to be a more time-efficient measure. Compared to text rewriting it took 40% less time to select the requested pictures.
YELLOcaptcha is currently only available as Symfony plugin called gyCaptchaPlugin.
For more information visit http://captcha.goyello.com
