ridhwanahsann

<p>RMGCaptcha Math Guard adds a GDPR-friendly, math-based CAPTCHA to protect your forms from spam and brute force. No external services, no tracking, and fully WordPress.org compliant.</p>
<p>Features:</p>
<ul>
<li>WordPress login protection (captcha on wp-login.php)</li>
<li>Contact Form 7 integration via [pmcMathcaptcha] / [pmcMathcaptcha*]</li>
<li>WooCommerce login and registration protection</li>
<li>Configurable difficulty and operations (Addition/Subtraction/Multiplication/Random)</li>
<li>Hide captcha for logged-in users</li>
<li>Custom error message support</li>
<li>Optional rate limiting and honeypot</li>
<li>Failed login log + logged user list (admin pages)</li>
<li>Translation-ready</li>
</ul>


RMGCaptcha Math Guard

A lightweight math CAPTCHA for WordPress login, Contact Form 7, and WooCommerce forms.

luileito

<p>μcaptcha is a math handwriting captcha scheme for touch-capable devices. Instead of entering text with a keyboard, you just retype a mathematical expression shown on a web canvas. μcaptcha belongs to the set of protocols called HIPs (Human Interactive Proofs), which allow a person to authenticate as belonging to a select group; e.g., human as opposed to machine, adult as opposed to a child, etc.</p>
<p>μcaptcha allows you protect your online forms from illegitimate access or abuse. Furthermore, as a byproduct of solving μcaptchas, a valuable labeled dataset of online handwritten math expressions is collected. μcaptcha is thus channeling the users’ effort into creating valuable resources for machine learning. <a href="https://mucaptcha.com/faq.html" rel="nofollow ugc">Learn how μcaptcha works</a></p>
<h3>Requirements</h3>
<ol>
<li>You need the μcaptcha API keys. <a href="https://api.mucaptcha.com" rel="nofollow ugc">Get them here</a>.</li>
<li>Your server must have <a href="http://php.net/manual/book.curl.php" rel="nofollow ugc">the cURL library</a> installed. Most servers do.</li>
</ol>
<h3>Translations</h3>
<ul>
<li>English (default)</li>
<li>Español (es_ES)</li>
<li>Català (ca_ES)</li>
<li>Other languages? – <a href="https://github.com/luileito/mucaptcha-wordpress/pulls" rel="nofollow ugc">Just make a pull request</a></li>
</ul>


μcaptcha

Integrates μcaptcha with WordPress, including comment and login/registration forms.

RMGCaptcha Math Guard vs μcaptcha