TGCaptcha2 is a TurboGears widget that provides an easy way to
incorporate a captcha as part a form in an attempt to reduce spam or
malicious activity.
Features include:
* (Relatively) pain-free usage and validation inside of a regular
widget-based form
* Flexibility to add or extend image generation algorithms and the
text displayed in the image
Enhanced with:
* Embed a word in the image or an equation that the user has to
solve
* Add an audio captch
