CFFormProtect is an alternative Captcha implementation that tries to be
more user friendly than the obfuscated text images.  In short, the user
is asked to select the correct image out of a set.  No difficult to read
text, just click the correct images.
 
Check out the features, and download the project at Riaforge:
http://cfformprotect.riaforge.org/
 
Try a demo here:
http://www.techfeed.net/cffpdemo/
 
The feedback I got on my first release of CFFormProtect was great, and
the biggest concern was that bots could successfully guess the correct
image with a 1 in 3 probability (33%).  CFFormProtect now only has a
6.6% chance of being broken.  I did this by displaying the three images
twice, in random order.  You have to correctly click on two of the six
displayed images, and if you are incorrect you get a new random set,
with a new correct answer.
 
The goal with CFFormProtect is to make form validation brain dead easy
for users, but very difficult for spam bots.
 
Planned for the next release:
1.  Improve image loading speed (I already know how I'm going to do
this)
2.  Set a failure limit; after x strikes, your out
3.  Display 9 images instead of 6, to increase security (this would be a
setting, so if you think 6 is enough you can easily change it)
 
Please give me feedback, and feel free to submit patches if you wanna
fix something.  :)
 
-------------------
Jake Munson
Web Developer
IT Department
Idaho Power
Boise, Idaho
208-388-5665
 

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"EMF <idahopower.com>" made the previous annotations.

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