reCaptcha in Delphi application

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I’m doing a CNPJ query by the Revenue website in an application.

Now they’re using the reCaptcha, then in a Webbrowser allow the user to click on I’m not a robot and after that, the user must click the button Consult on the application, does not display page on Webbrowser.

My question is the following: Is there any way I know when the user has completed the validation process of reCaptcha?

I compared the source code before and after validation, but it doesn’t change anything. Is there any way? If there is, how can I know to simulate the click on the query button of the application or even hide the Webbrowser.

  • The program in Delphi opens an internal browser with the recipe website?

  • That’s right, I open the revenue site only for the user to validate the reCaptcha, then through the application read the HTML and fill in the fields on the form Delphi.

  • I think the idea of reCaptcha is to avoid just that kind of thing...

  • 1

    I’m not trying to beat around the bush reCaptcha, after all the user will have to do the validation, I just want to know when the validation was completed. Will this has no way?

  • 1

    Hello, there is. I don’t know if you still need it. Just look at the content of g-recaptcha-Response. It is also possible to perform the bypass, but here is not the goal. NF-e aid

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