Questions tagged [captcha]

Captcha is a type of challenge-response test used in computing as an attempt to ensure that the response is given by a human being and not generated by a computer.

CAPTCHA is an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart".

A CAPTCHA or Captcha is a type of challenge-response test used in computing as an attempt to ensure that the response is not generated by a computer. The process usually involves one computer (a server) asking a user to complete a simple test which the computer is able to generate and grade.

Because other computers are supposedly unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human. Thus, it is sometimes described as a reverse Turing test, because it is administered by a machine and targeted to a human, in contrast to the standard Turing test that is typically administered by a human and targeted to a machine.

The usual reason for using a CAPTCHA is to prevent automated spam from being posted into a public discussion forum or similar site.

A common type of CAPTCHA requires the user to type letters or digits from a distorted image that appears on the screen. However these are becoming increasing unreliable as the automated spam systems that they are trying to defeat are becoming much better at reading the distorted text. More advanced CAPTCHAs are thus becoming available that require the user to answer more detailed questions or perform more complex actions.

Most CAPTCHAs, particularly the more difficult ones, suffer from accessibility issues. The act of making it difficult for an automated system to read and respond to the CAPTCHA also makes it more difficult for many users with disabilities to access sites that use them. For example, a user who relies on a screen reading web browser may be unable to see the CAPTCHA image. Better CAPTCHA systems will provide solutions to some of these issues, such as an audio alternative, but these users are generally still left at a disadvantage.

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Why I have the error : Entered captcha is wrong, try again

I installed hCaptcha in phpMyAdmin using the following settings: $cfg['CaptchaMethod'] = 'checkbox'; $cfg['CaptchaApi'] = 'https://js.hcaptcha.com/1/api.js'; $cfg['CaptchaCsp'] = 'https://hcaptcha.com…
Seith
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How can I execute CAPTCHA function before check username password in WordPress login form?

I use this plugin captcha for login and comment forms. This plugin work perfect in comment forms, But the plugin in login form first check username password(1) is correct or no, then check captcha(2) as shown as below. This is not useful for…
charll
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i am trying to pass outlook funcaptcha using Twocaptcha but not working

I am trying to bypass funcaptcha throug twocaptcha using python. But could not here is my code also solver = CaptchaSolver(CaptchaSolvingService.TWOCAPTCHA, api_key='') solver.get_balance() solver =…
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Error : Validating reCAPTCHA with jQuery, ajax in JSP

I am trying to implement reCaptcha on a webpage, everything is working fine but I am not able to validate if the user really successfully passed the captcha or not. The code is working but when I click the button manually, then it shows error. I was…
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trainline code is now denied by captha on request

Seem that the trainline code from github not get update anymore, and seems that trainline put a captcha on there API (that's weird to have an API and denied automated request?). Here a classic request : import trainline results = trainline.search( …
BenjiBoy
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Preventing captcha code from being cached by wp rocket plugin

I use Captcha Code plugin When the wp rocket plugin plugin is active, the same captcha code as before will be displayed every time the page is refreshed, This problem persists until I clear the cache wp rocket, What is the cause of this problem? I…
rk9802710
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reCaptcha quota exceeded does not match our monthly traffic

Last month we received an e-mail telling us that our reCaptcha quota had been exceeded and we had 90 days to upgrade do Enterprise. Yesterday we received the second e-mail. In both e-mail we had over 1 million requests per month, and that number…
Victor Ferreira
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How to detect a MtCaptcha captcha with Selenium?

I need some help. In my Python code using the Selenium module, the identifier mtcap-image-1 on the website https://top-serveurs.net/gta/vote/midnight-rp is not recognized by Selenium. I would like to know if it is possible to make Selenium recognize…
eVerK0Z
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CaptchaMVC 05 html helper reading value

For my Asp.Net MVC signup project, I'm trying to add Captcha for human validation. Here I have downloaded the NuGet package called CaptchaMVC5. In the view In the manual, it asked to add it as, @using CaptchaMvc.HtmlHelpers;
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Captcha field not validating on Yii2

I finally succeded to get the captcha widget working in the login form of in a Yii2 Users module, but in the register form the captcha field only validates correctly, when calling $user->validate(), but not when calling $user->save(). if…
anva
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tensorflow predict is too slow

I built up a model with 500 captcha images with tensorflow. It works fine on my macbook M1 at a good speed. But when I deployed it to cloud Ubuntu server with 4 cores. it became very slow. Esp. it takes long time when it starts up. I am using…
user1942626
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Embedded external Captcha verification in website always returns a failure while working using Postman

I'm trying to embed an image captcha on a webpage, using an external endpoint to retrieve the image and another external endpoint to send the string presented in the image. The endpoint that retrieves the image is the…
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Captcha field not working on module in Yii2

I have a captcha field in an application form, that correctly works, and one in the login form of the Users module, that does not work. In the login form I wrote: field($user, 'captcha')->widget(\yii\captcha\Captcha::className(), [ …
anva
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How can I solve CloudFlare Captcha?

guys. I have faced some problems while am developing the website to scrape data from a website. This website has a CloudFlare Captcha. I am terriable. I used the api which 2Captcha.com provide, so I could get the token to bypass the CloudFlare…
Cloud Dev
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vue-client-recaptcha error in Vue js page

I have a Laravel + Vue js (with Vite) In one page I need to use vue-client-recaptcha (https://bestofvue.com/repo/parsajiravand-vue-client-recaptcha) Following the documentation at the previous url I installed the module with npm install…
agodoo
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