Shohidul Islam Apu

<p>CF7 Math Captcha is a lightweight plugin that adds a math captcha field to your Contact Form 7 forms.<br />
It helps reduce spam without using Google reCAPTCHA.<br />
Very simple to use: just add <code>[mathcaptcha* captcha-field]</code> to your Contact Form 7 form.</p>


Math Captcha for Contact Form 7


Nice, clean and lightweight solution for adding Math Captcha to Contact Form 7. Works smoothly and keeps spam away without extra hassle. Good job, bro! 👏


Keeps spam away without extra hassle

Adds a simple math captcha field for Contact Form 7 to prevent spam submissions.

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.

Math Captcha for Contact Form 7 vs μcaptcha