Larafy enables you to send SMS for two factor authorization. Its easy to configure Nexmo SMS. All you need to have a working Nexmo account. Once you login into Nexmo SMS control panel, you will find API Key & API Secret in the dashboard. You also need to approve SMS sending number from the Nexmo Control Panel.

Once you have all these three details, you can go to configuration SMS tab & enter these details to be able to send SMS.