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Questions tagged [recaptcha]

For questions about the reCAPTCHA service: Designed to protect against spam and abuse by blocking bots while allowing valid users access.

reCAPTCHA is a system originally developed at Carnegie Mellon University that uses CAPTCHA to help digitize the text of books while protecting websites from bots attempting to access restricted areas.

reCAPTCHA requires a user to select images which do or don't include certain items in them. The technology works due the ability of a human being to distinguish subtle visual hints that AI would not yet recognize.

On September 16, 2009, Google acquired reCAPTCHA.

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4381 questions
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Vue.js google reCaptcha callback

I am trying to get recaptcha callback working with vue.js in a component. The captcha itself does work, but not the callback that I define in the data-callback attribute. I've tried everything I could think of, but I still get the ReCAPTCHA couldn't…
user2209644
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reCAPTCHA accepting one word out of two

I am a bit confused about how reCAPTCHA works. I have implemented it using ROR. Sometimes even if i specify only one word out of two, it returns true while sometimes it fails. I am really confused and not able to understand the behaviour…
user393580
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How to use Joomla recaptcha plugin with my custom module?

I have created a custom module for my contactus form. Now I want to use Joomla recaptcha plugin with this module. Any idea how to get this done?
Toretto
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How to implement reCaptcha V3 in ASP.NET

Does anyone have a full implementation demo of reCaptcha V3 in ASP.NET? I found this article: Google Recaptcha v3 example demo At the moment I am using reCaptcha V2 with the following code: public bool RecaptchaValidate() { string…
Tig7r
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Google ReCaptcha not posting 'g-recaptcha-response'

This question has been asked before: New Google ReCaptcha not posting/receiving 'g-recaptcha-response' - but there was no proper answer. I have the exact same set up as him, but the code fails here: if(!$captcha){ exit; } so…
frosty
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8 answers

NoCaptcha returning error invalid-json

I integrated Googles funky ReCaptcha NoCaptcha into a simple html5 form. On localhost it is working, but testing online it always returns the error 'invalid-json'. Here is part of my code: $secret = 'TEHSEHCRET'; $recaptcha = new…
Tommy
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Prevent reCaptcha multiple image selections

I'm using Google reCaptcha for validation purposes on a client website. Today I've got a complaint/change-request from them, regarding the multiple image selection (Select 2 beers, wines, cakes etc.) validation of reCaptcha. My client thinks it's…
JuniorDev
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reCaptcha show "input error: invalid referer"

I have registered an account on recaptcha.net with mydomain.com. While I'm developing on my localhost it works fine, but whenever I try to open the page from another machine in my local network it shows "input error: invalid referer" error…
ehsun7b
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Error: No reCAPTCHA clients exist (reCAPTCHA v3)

I've integrated reCAPTCHA v3 in one of my forms. In onload, there's a token produced and google captcha logo in the bottom right corner. But when I submit the form, in console there is an error shown, "Error: No reCAPTCHA clients exist". Also, it…
Hossain Amin
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How Google's reCAPTCHA v3 works

Google has rolled out reCAPTCHA v3. It does away with all the user friction. I wish to use it to secure my site. However, I am unsure about how this is going to protect my site. What if a hacker spams the URLs on my site with an external tool…
Chong Lip Phang
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Detect when reCaptcha does not load

What is the best way to detect if a reCaptcha v2 does not load? I would like to alert users when they need to use the captcha to continue, but it was unable to load.
Matt
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Difference between CAPTCHA and reCAPTCHA

What are the differences between CAPTCHA and reCAPTCHA? What is the best situation to opt for reCAPTCHA?
Neha Prakash
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Overriding google recaptcha css to make it responsive

I installed Google Recaptcha in a site (not a Wordpress site or Joomla) So do not offer any WP plugins or Joomla Extension :) My problem is, the site is responsive and recaptcha is not. When I use Firebug to find its styles I realized that not…
LOTUSMS
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How to pass ReCaptcha v3?

ReCaptcha v3 will not present a captcha anymore, but rely on browser fingerprinting and other information google can get about you. Here is a test: https://recaptcha-demo.appspot.com/recaptcha-v3-request-scores.php And the API documentation:…
allo
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Google REcaptcha not showing

I have the following in my
and this on my but nothing is shown, either on firefox or chrome... Is this a…
Fane
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