Possible varient - just display three images and then ask people to click on them in order, for example "Click on the dog, then the cat, then the bird".
To increase the number of varients & security you could allow images to be clicked more than once "Click the cat, then the cat, then the dog". On 30/10/06, Munson, Jacob <[EMAIL PROTECTED]> wrote: > 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 > > > ------------------------------------------------------------------------------ > This transmission may contain information that is privileged, confidential > and/or exempt from disclosure under applicable law. If you are not the > intended recipient, you are hereby notified that any disclosure, copying, > distribution, or use of the information contained herein (including any > reliance thereon) is STRICTLY PROHIBITED. If you received this transmission > in error, please immediately contact the sender and destroy the material in > its entirety, whether in electronic or hard copy format. Thank you. > > ============================================================================== > "EMF <idahopower.com>" made the previous annotations. > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Introducing the Fusion Authority Quarterly Update. 80 pages of hard-hitting, up-to-date ColdFusion information by your peers, delivered to your door four times a year. http://www.fusionauthority.com/quarterly Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:258519 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
