[NFBCS] Automatic Captcha solving
Joseph C. Lininger
joe at pcdesk.net
Mon Mar 29 18:24:57 UTC 2021
Hi Curtis,
I know you already know the answer to your rhetorical question, but I am
going to answer it anyway for those who don't understand why using OCR
to solve captchas isn't going to happen.
The entire point of a captcha is to prevent automated systems from
interacting with a page. If OCR or any other automated technology could
be used to solve the captcha, there would be no point in using one. If a
blind person could use OCR to solve it, so could any other automated
system incorporating OCR technology. The same thing goes for any other
automated solution one might come up with for the solution of captchas.
In fact, captchas are specifically designed to be hard to solve by
automated means. For example, the ones that require you to enter a code
you see on the screen have the code blurred, in funny fonts, or
otherwise obscured in a way that makes it hard for automated systems to
recognize the characters. Most captchas today do have an audio option
that you can use as an alternative to the visual captcha. You might
argue that this is harder than just using an automated solution, and
you're right, it is. That's the point though; the captcha is designed to
explicitly require human interaction in order to proceed.
Joe
On 3/29/2021 1:42 PM, Curtis Chong via NFBCS wrote:
> Hello:
>
> If OCR can crack a CAPTCHA, doesn't this kind of defeat the purpose of the
> CAPTCHA?
>
> Cordially,
>
> Curtis Chong
>
> -----Original Message-----
> From: NFBCS <nfbcs-bounces at nfbnet.org> On Behalf Of Jonesy Cee via NFBCS
> Sent: Monday, March 29, 2021 10:58 AM
> To: NFBCS at nfbnet.org
> Cc: Jonesy Cee <jones.cee7 at yahoo.com>
> Subject: [NFBCS] Automatic Captcha solving
>
> Has anyone had luck with using a screen reader such as orca and implementing
> a script, plug-in or application to automatically solve captchas using OCR
> or Voice recognition? Here is an example of what I am talking about,
> although I would really like to find an option that works purely with
> optical character recognition (OCR).
>
> https://github.com/dessant/buster
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