Ivan

<p>The Google Authenticator plugin for WordPress gives you two-factor authentication using the Google Authenticator app for Android/iPhone/Blackberry.</p>
<p>If you are security aware, you may already have the Google Authenticator app installed on your smartphone, using it for two-factor authentication on Gmail/Dropbox/Lastpass/Amazon etc.</p>
<p>The two-factor authentication requirement can be enabled on a per-user basis. You could enable it for your administrator account, but log in as usual with less privileged accounts.</p>
<p>If You need to maintain your blog using an Android/iPhone app, or any other software using the XMLRPC interface, you can enable the App password feature in this plugin,<br />
but please note that enabling the App password feature will make your blog less secure.</p>
<h3>Credits</h3>
<p>Thanks to:</p>
<p><a href="https://profiles.wordpress.org/evinak/" rel="nofollow ugc">Oleksiy</a> for a bugfix in multisite.</p>
<p><a href="https://github.com/pancek" rel="nofollow ugc">Paweł Nowacki</a> for the Polish translation</p>
<p><a href="https://github.com/FabioZumbi12" rel="nofollow ugc">Fabio Zumbi</a> for the Portuguese translation</p>
<p><a href="https://www.guidoschalkx.com/" rel="nofollow ugc">Guido Schalkx</a> for the Dutch translation.</p>
<p><a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=henrik%40schack%2edk&lc=US&item_name=Google%20Authenticator&item_number=Google%20Authenticator&no_shipping=0&no_note=1&tax=0&bn=PP%2dDonationsBF&charset=UTF%2d8" rel="nofollow ugc">Henrik.Schack</a> for writing/maintaining versions 0.20 through 0.48</p>
<p><a href="http://tobias.baethge.com/" rel="nofollow ugc">Tobias Bäthge</a> for his code rewrite and German translation.</p>
<p><a href="http://blog.pcode.nl/" rel="nofollow ugc">Pascal de Bruijn</a> for his “relaxed mode” idea.</p>
<p><a href="http://technobabbl.es/" rel="nofollow ugc">Daniel Werl</a> for his usability tips.</p>
<p><a href="http://dd32.id.au/" rel="nofollow ugc">Dion Hulse</a> for his bugfixes.</p>
<p><a href="https://profiles.wordpress.org/users/aldolat/" rel="nofollow ugc">Aldo Latino</a> for his Italian translation.</p>
<p><a href="http://www.kaijia.me/" rel="nofollow ugc">Kaijia Feng</a> for his Simplified Chinese translation.</p>
<p><a href="http://www.buayacorp.com/" rel="nofollow ugc">Alex Concha</a> for his security tips.</p>
<p><a href="http://jetienne.com/" rel="nofollow ugc">Jerome Etienne</a> for his jquery-qrcode plugin.</p>
<p><a href="http://orizhial.com/" rel="nofollow ugc">Sébastien Prunier</a> for his Spanish and French translation.</p>


Google Authenticator

Personally I feel 2FA should be a part of WordPress core. But since it isn't, plugins like this one are a must-have to secure your sites.

The configuration interface is clearly layed out and the login page fits in perfectly with the default WP login page styling.

This plugin is light-weight, unobtrusive, free and adds that extra layer of security. Should your admin credentials ever be compromised, 2FA will keep your site secure.

Must-have security plugin

Awesome plugin, which is almost always in first group of plugin I've install on new website. Thank you for create and maintain it.

One on few my first-to-install plugin

Google Authenticator for your WordPress blog.

miniOrange

geniuszealot

<h4>OTP VERIFICATION WITH FIREBASE GATEWAY</h4>
<p>Plugin allows endusers to login/register with one time password(OTP) with firebase gateway. Plugin uses <a href="https://firebase.google.com/" rel="nofollow ugc">Firebase Gateway</a> to send and verify OTP. It removes the possibility of users registering with fake Mobile Number by enabling OTP Verification. It allows passwordless login & login with phone number. The OTP Verification plugin also checks if Email Address/Mobile Number of a user already exists.<br />
Follow the link for detailed information on the free and premium plan of the plugin : <a href="https://plugins.miniorange.com/wordpress-otp-verification-using-firebase-gateway" rel="nofollow ugc">MiniOrange OTP Verification using Firebase Gateway</a></p>
<h3>FEATURES</h3>
<ul>
<li>Login with Phone Number</li>
<li>Passwordless login (No need to remember your password anymore!)</li>
<li>OTP verification on registration form.</li>
<li>Supports country code dropdown</li>
<li>Customizable login & registration form.</li>
<li>Replace the default WooCommerce Login/Registration Form with the miniOrange Login/Registration Form.</li>
<li>OTP Verification on the default WooCommerce Login/Registration Form.</li>
<li>OTP Verification on the WooCommerce Checkout Form.</li>
<li>OTP Verification on the Ultimate Member Registration Form.</li>
<li>OTP Verification on the Ultimate Member Login Form.</li>
<li>OTP Verification on the Gravity Form.</li>
<li>Allow the admin to decide the role of the user.</li>
<li>Allow admin to set up custom redirection after login/ Registration.</li>
</ul>
<h4>How does this plugin work?</h4>
<ol>
<li>On submitting the registration or login form an SMS with OTP is sent to the mobile number provided by the user.</li>
<li>Once the OTP is entered, it is verified and the user gets registered.</li>
</ol>
<h3>SUPPORT</h3>
<p>Customized solutions and Support options are available. Email us at <strong>otpsupport@xecurify.com/info@xecurify.com</strong>.</p>


Miniorange OTP Verification with Firebase

OTP Verification with Firebase gateway. PasswordLess Login. Firebase OTP verification on login, registration forms, WooCommerce Checkout, Gravity Form

Google Authenticator vs Miniorange OTP Verification with Firebase