ian at inextenso.com
Tue Jul 19 17:45:43 MEST 2005
FWIW, I believe these are called Captchas (completely automated public
Turing test to tell computers and humans apart).
On Jul 19, 2005, at 17:04, Charles A. Monteiro wrote:
> ah, yes, now I understand, thanks
> On Tue, 19 Jul 2005 09:12:55 -0400, Damien Cassou
> <cassou at iam.unibe.ch> wrote:
>> On Tue, Jul 19, 2005 at 08:56:06AM -0400, Charles A. Monteiro wrote:
>>> Sorry, can you describe with a concrete example what bots achieve by
>>> printing a string into an image. Would that be a pre-existing image
>>> on the
>>> wiki or a new one that the bot was trying to insert? Is the string
>> It is not something new, you might have seen this before. The website
>> display an image, and a form. The user has to look the image and write
>> in the form what is drawn in the image. Since bots has problems to
>> read images, they can't enter the website.
>> Here is an example :
>> Go to http://www.paypal.com/
>> Click on the image 'Sign Up Now' then the button 'Continue'
>> Then, on the very bottom, you see an image with letters and digits on
>> it. To sign a new account, you have to write in the text box what is
>> written on the image.
>> This is what SW2LetterWarper is about
> Charles A. Monteiro
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