FriendlyCaptcha is a proof-of-work based CAPTCHA alternative that respects the user's privacy, see the Friendly Captcha website.
Install Friendly Captcha for WordPress.
Make sure you have PHP installed (e.g. with brew install php
on a Mac).
cd friendly-captcha
mkdir -p bin
php -r "copy('https://getcomposer.org/installer', './bin/composer-setup.php');"
php bin/composer-setup.php --install-dir=bin --2.2
bin/composer.phar install
The friendly-captcha
directory is now ready to be installed as a Wordpress plugin by copying it into the wp-content/plugins
directory of your site.