On Tue, 2007-06-12 at 15:06 -0400, Daniel Brown wrote:
>
> 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.
Nice, one problem though... the text is unreadable on some backgrounds.
I suggest you outline it or something. Easy to do by drawing the font 5
times. 4 times for the outline where you offset the drawing location by:
(-1, 0), (0,1), (1,0), (0,1)
Then change colour and draw the font at the original location.
Cheers,
Rob.
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