FirstProductions Human Test

http://www.firstproductions.com/cgi/human/

What is FirstProductions Human Test?FirstProductions Human Test, a CGI script written in the Perl language, is based on the ideas of The CAPTCHA Project. It generates distored text that most humans can read, but computers cannot to prevent automated robots from submitting forms. Software similar to this is starting to become widely used throughout the Internet, and is currently in place on major websites such as Yahoo! to prevent automated sign-ups. See a demo of the software for an example.
How does it work?FirstProductions Human Test selects a random sequence of letters and numbers and generates a distorted image that displays them. It outputs the image and an encrypted version of the sequence. When a human is given the test, they are able to enter the correct sequence of characters and submit it back to the script. The script checks the sequence against the encrypted version and a database to determine if the test was passed or failed.
While humans can usually pass the test, occasionally an image will be too distored for humans to make out the correct sequence. In this case, the page can simply be refreshed, and a new sequence will be displayed.
When a computer running an automated robot visits the page and is asked to enter the correct sequence, it is unable to discern the distored characters and cannot pass the test. Thus only humans will be able to pass the test, and automated robots cannot. See a demo of the software for an example.
Why do I need it?FirstProductions Human Test and similar applications have many uses. A detailed list is available on The CAPTCHA Project website. Some of the main uses include:
• Online polls - to require that only humans can vote• Online account registration - to prevent automated sign-ups• Unsolicited email - to only allow email sent by a human• Password logins - to prevent dictionary attacks on password logins
Basically, anytime that you want to make sure a real human is on the other end, and not just a robot or automated software, there is a use for FirstProductions Human Test.

FeaturesThese are a few of the many features included in FirstProductions Human Test:• FirstProductions Human Test is FREE software released under the General Public License.• All images displayed are dynamically generated based on character and background images. Noise and other distortions are all dynamic and random.• It is a Perl library, so it can easily be included with your own scripts. It includes a sample Perl script to demonstrate how to use the library.• The number of characters shown can be customized, as well as the style and size of the letters. You can create your own set of letter and number graphics with whatever font and size you want, save them in PNG format, and tell FirstProductions Human Test to use those instead of the default graphics.• Images are distorted, random, and dynamic to make them resistant to character-matching software.
Download and DemoFirstProductions Human Test 1.0, the current version, can be downloaded and used for free under the General Public License. While you are not required to, we would appreciate a link back to our website if you use our software.
Download the software · See a demo of the software
Authen::CaptchaAn object-oriented Perl module based on FirstProductions Human Test suitable to run under a mod_perl environment is now available for download from CPAN at:http://search.cpan.org/search?dist=Authen-Captcha
Documentation and SupportPlease use our new forums for support and discussion about FirstProductions Human Test. You should also check the documentation included with the software if you are having a problem. We have also created an extensive tutorial showing how to integrate the Human Test library into an existing script.
FirstProductions Human Test is a product of FirstProductions CGI Scripts
Web HostingIn addition to CGI scripts, we also offer web hosting services. Our servers are fully compatible with all of our software products. Visit the FirstProductions Web Hosting home page for more information about our web hosting services.
Looking for Custom Programming Services?We offer custom CGI script programming services through Rent A Coder. If you need custom coding services, please post a project for us and view our Rent A Coder resume. You can also contact us directly for a quote on your project.
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