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This is a PHP security script that can be used to implement Captcha script which doesn't require images but works on text. With KBCaptcha, you can protect your pages with the use of Captcha, you can now have some additional security/authentication/nospam to your web pages. This script is based on the Question and Answer pattern. The Text based CAPTCHA stops spambots from filling out your signup pages and contact forms by baffling them with a devious, text-based interlock.
This CAPTCHA form is designed to be easy for humans but difficult for spambots. Best of all, it doesn't require graphics libraries like GD or ImageMagick to work. Unlike most CAPTCHA systems, the Text base CAPTCHA presents users with a short, simple question instead of oddly-distorted, difficult-to-read random letters.
Features of KBCaptcha:
- Provides enhanced security to your pages and prevents SPAM
- Can be easily modifiedv
- Easily add or remove Questions and Answers from database table
- Frame your own Questions and Answers
- The answers can be in words or numerics