Blocked by hCaptcha. Seems to robot behavior

[daisson.jb]

Hello.

We've been using CEF4Delphi since october/2023. In most cases it works fine. But we´ve facing in issue thats involve hCaptcha.
First of all, our process consist of access an Brasilian governament page. After that we insert informations on page's components by javascript code. By this time our user has to click on an Continue button. After that the hCaptcha is on the screen with the "I'm human" box. So, the user click on that option e suddenly the message below shows up:

Blocked by Captcha. Robot behavior blocked from 8am to 6pm.

Well, this website has some "inteligence" to block robot process, such as this routine.

An odd situation is that this issue happens in some equipments (desktop computers) e do not happen in other equipments (also desktop computers). But they all are in the same network (intranet). And in most cases have the same operating system (windows by the way).

Do you have any tips for this?
Is this relate with cookies?

I´ve been looking in demos folder, here in forum's messages, etc. No success so far.

Thanks.

[salvadordf]

Hi,

Some web pages check the supported browser API functions to detect embedded browsers.
Each web page has a different way to detect embedded browsers.

Use the MobileBrowser demo and make some changes to see if that works.

[daisson.jb]

Hi.

Thank you Salvador for your answer. Although, the MobileBrowser demo test worked but it was blocked the same way as we have in our app.

Do you have another tips for this?

Thanks.

[salvadordf]

Check the JavaScript code in that page to know what browser information is sent to the server.

That should give you a clue about how they are identifying the browser and then you can try the MobileBrowser demo.

MobileBrowser uses some DevTools methods to emulate different browser settings and sometimes they can be used to bypass those checks.