GitHub - haoranyu/CAPTCHA: A small test of CAPTCHA

Branches Tags

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
1.ttf		1.ttf
2.ttf		2.ttf
3.ttf		3.ttf
4.ttf		4.ttf
5.ttf		5.ttf
6.ttf		6.ttf
README		README
demo.php		demo.php
index.php		index.php

Repository files navigation

The very common type of CAPTCHA is simply composed of numbers, letters and noise. Although this type of CAPTCHA sounds easy to be recognized by programs, a good version of it can still prevent recognition from machine for most of the time.  It is also the type of CAPTCHA I am going to discuss about today.

Detail: http://www.haoranyu.com/?p=168