textTHaCAA
textTHaCAA is a system for Telling Humans and Computers Apart Automatically that was inspired by CAPTCHA from Carnegie Mellon. Unlike image-based problems which can be difficult for people with certain disabilities, it is designed to be accessible to all users. It achieves this by asking simple randomly generated text-based multiple choice questions where the user has to select the members of one group from a list randomly selected from members of a series of different groups.
| Tags | Internet Web Dynamic Content Wiki Message Boards CGI Tools/Libraries Site Management |
|---|---|
| Licenses | LGPL |
| Implementation | PHP |
Recent releases
- 08 Nov 2006 20:14
Changes: The way the system is seeded was optimized.
- 01 Oct 2006 16:34
Changes: This release adds instructions to the documentation for changing the lists from which the questions are generated.
- 29 Jun 2006 10:56
Changes: A minor issue with the question form has been fixed.
- 23 May 2006 14:42
Changes: This release includes improved seeding of the random number generators and increases the accessibility of the system. It now passes the full range of accessibility checks that are performed by the WAVE 3.0 Accessibility Tool. This release fixes session handling issues, and there are various other minor optimisations and improvements.
- 20 May 2006 13:02
Changes: The system is now far more secure, due to a new way of generating and storing seeds for questions and answers.
