Re: Going from simple to super CAPTCHA

On 6/12/07, Robert Cummings <robert@interjinn.com> wrote:

On Tue, 2007-06-12 at 19:34 +0200, Tijnema wrote: On 6/12/07, Robert Cummings <robert@interjinn.com> wrote:

On Tue, 2007-06-12 at 19:23 +0200, Tijnema wrote:

On 6/12/07, Robert Cummings <robert@interjinn.com> wrote:

On Tue, 2007-06-12 at 18:19 +0200, Tijnema wrote:

On 6/12/07, Robert Cummings <robert@interjinn.com> wrote:

On Tue, 2007-06-12 at 12:01 -0400, Robert Cummings wrote:

On Tue, 2007-06-12 at 11:56 -0400, Robert Cummings wrote:

    (10000 * 100) / 1000000 = .10 = 10% of the time

Bad math alert... (10000 * 100) / 1000000 = 10    ;)

Still the same answer though, was just mixing what I wrote with what I was thinking :)

Bleh, what's wrong with me today... it's 1% not 10%. Still within reason for a spammer. *smacks head to clear the fog*

So, that means that you need to allow maximum of 10 attempts per few minutes, so that there will be 0,1% change ;)

Using Ted's technique I've found the perfect CAPTCHA -- and it's fun too: http://shorl.com/nomojeryprafri Cheers, Rob.

Hmm, LOL Ok, found him ;) He's under the ground ... :P

Heheh, nah, not this time... he's in one of the bumper cars :) Cheers, Rob.

I see ;) So you want to take this picture, change the position of bin laden randomly, and then just let every user before they post find bin laden ;) Of course not... I posted it as a joke :) Besides, it would be weak against pattern matching of Bin Laden's head or if different heads were used then would be able to compare images to find where differences occur... but I know you knew that already >:) Cheers, Rob. -- .------------------------------------------------------------. | InterJinn Application Framework - http://www.interjinn.com | :------------------------------------------------------------: | An application and templating framework for PHP. Boasting | | a powerful, scalable system for accessing system services | | such as forms, properties, sessions, and caches. InterJinn |

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Okay, here's something I whipped up today: http://pilotpig.com/captcha/index.php Works pretty well, but keep in mind that it's in the very early stages. I randomized the position and size to assist in throwing off Turing detection, and added color not only to screw with the color-detection schemes, but also in case it overlays the target bubble. It's 600x400, so that's 240,000 potential spots to click, with random size, location, and area coordinates thrown in the mix. -- Daniel P. Brown [office] (570-) 587-7080 Ext. 272 [mobile] (570-) 766-8107