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From Pier Fumagalli <>
Subject Re: Warped Text...
Date Fri, 02 Sep 2005 16:19:17 GMT
On 2 Sep 2005, at 17:00, Jorg Heymans wrote:
> Pier Fumagalli wrote:
>>>> Guys,
>>>>      for one of our registration projects, we needed to verify  
>>>> that a
>>>> user is really in front of the browser (no automatons allowed). I
>>>> wrote, then, a little "text-warper" that randomly stretches text  
>>>> for
>>>> a user to see (and re-type) and writes out JPEG files.
> Amazingly enough, PWNtcha [0] does not seem to be able to decode your
> rather simple text warping. It's intriguing to see how their routines
> can solve captchas even humans have to concentrate on, yet is  
> unable to
> solve a simple text warp.
> Jorg
> [0]
> (i took the liberty of running your warps through their cgi)

Err... Ehm... Well, did the same before posting! :-D

But this  
can defeat it.

If it's human-readable, at the end, it WILL be defeated, no matter what.


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