Ian Dunn

The <a href="https://wordpress.org/plugins/google-authenticator/" rel="ugc">Google Authenticator</a> plugin is a great way to add two-factor authentication to your site, but in order for it to work, users have to activate it for their account themselves. They may not know that it’s available, or may not be motivated to enable it.
This plugin helps administrators to encourage users to activate it, and has three different methods for doing that, depending on how strict you want to be:
<ul>
<li>Gently Nag the user: A warning message will appear at the top of the Dashboard and Profile screens, asking them to enable two-factor authentication. The message goes away when they enable it. This is the default behavior.</li>
<li>Persistently Nag the user: The warning will appear at the top of all screens until they enable two-factor auth.</li>
<li>Force the user: The warning will appear on all screens, and the user will also be prevented from doing anything inside wp-admin until they activate two-factor auth. They’re temporarily assigned the role of a Subscriber, and redirected to their profile whenever they try to access another screen. Once they enable two-factor auth, their original role is restored and they can access other screens again. 
Keep in mind that the Google Authenticator plugin doesn’t require users to enter a valid 2FA code from their phone during the activation process, so some users may not set it up correctly and lock themselves out of their account. This is unfortunate and may result in more support requests, but it’s a small price to pay for increased security.</li>
</ul>

Encourage User Activation for Google Authenticator

Allows administrators to either nag users to enable two-factor authentication, or force them to enable it.

twofactorauthentication

twofactor

googleauthenticator

A highly secure & easy to setup Google Authenticator (Two Factor Authentication) for your WordPress site. Rather than relying on a password alone, which can be phished or guessed, Google Authenticator adds a second layer of security to your WordPress accounts. It protects your website from hacks and unauthorized login attempts.
This plugin provides two factor authentication through Google Authenticator app during login. If you are looking for OTP Verification of users during Registration then we have a separate plugin for this. <a href="https://wordpress.org/plugins/miniorange-otp-verification/" rel="ugc"> Click Here </a> to learn more.
<ul>
<li>No Registration</li>
<li>Multi-site Support</li>
<li>Complete On-premise Solution.</li>
<li>All phones with Google Authenticator and Authy Authenticator App.</li>
<li>You can use a one time passcode generated by app to login even if you don’t have internet connection on your phone.</li>
<li>Google Authenticator method is supported by both Google Authenticator and Authy App. You can configure Google Authenticator method by Google Authenticator as well as Authy 2-Factor Authentication App.</li>
</ul>
<h4>Apps Supported by miniOrange Two Factor Google Authenticator?</h4>
<ul>
<li>Google Authenticator App.</li>
<li>Authy 2-Factor Authentication App.</li>
</ul>
<h4>Free Version</h4>
By default, miniOrange Google Authenticator plugin for WordPress is free for 1 user forever. You can change default name in Google Authenticator app. Complete On-premise Solution which supports both single and multi-site environment. You do not require to register to use the plugin.
Customized solutions and Active support is available. Email us at info@miniorange.com or call at +1 9786589387.
We also provide feature with ability to define trusted locations, trusted time of access and User behavior rules are supported. Email us at info@miniorange.com or call at +1 9786589387.
Single Sign on into any cloud application E.g Google Apps, Salesforce, Office 365, Box, DropBox etc are supported. Check out 3000+ apps that are supported here https://miniorange.com/single-sign-on-sso
miniOrange supports 15+ authentication methods. For a complete list of authentication methods please visit https://miniorange.com/strong_auth . If you want to have any other 2-factor for your WordPress site, <a href="https://miniorange.com/contact" rel="nofollow ugc">Contact us</a>.
<ul>
<li>One time passcodes (OTP) over SMS</li>
<li>OTP over Email</li>
<li>OTP over SMS and Email</li>
<li>Out of Band SMS</li>
<li>Out of Band Email</li>
<li>Google Authenticator</li>
<li>Soft Token (similar to google authenticator)</li>
<li>Push Notification</li>
<li>USB based Hardware token (yubico)</li>
<li>Security Questions</li>
<li>Mobile Authentication ( QR Code authentication )</li>
<li>Voice Authentication (Biometrics)</li>
<li>Phone Verification</li>
<li>Device Identification</li>
<li>Location</li>
<li>Time of Access</li>
<li>User Behavior</li>
</ul>
You can choose from any of the above two factor authentication methods to augment your password based authentication. miniOrange multi factor authentication service works with all phone types, from landlines to smart-phone platforms.
For support please email us at info@miniorange.com or call us at +1 978 658 9387

Login with TOTP (Google Authenticator, Microsoft Authenticator)

Google Authenticator(2FA) works out of the box on your wordpress site without any third party service involvement. Two Factor Authentication made easy …

Encourage User Activation for Google Authenticator vs Login with TOTP (Google Authenticator, Microsoft Authenticator)