Last week I shared how to enable two-step authentication in your WordPress using Jetpack’s Single Sign On module. However, there is one problem in Jetpack’s SSO module. Even after you enable two-step authentication, a visitor can easily sign-in with the login form, and he won’t have to complete two-step authentication process.
Here’s way which will force two-step authentication in Jetpack SSO module by directly redirecting all our users to WordPress.com connect login form.
Just drop the following snippet to your current theme’s functions.php file:
add_filter( 'jetpack_sso_bypass_login_forward_wpcom', '__return_true' );
Thanks to Ben Lobaugh for the help!