Quick and Easy 2FA: Adding Authy to a NodeJS App

This article provides a detailed guide on how to add Authy two-factor authentication (2FA) to a NodeJS application. It covers the registration process with Twilio and obtaining an Authy API key, implementing Authy in a NodeJS stack using the npm library, extending user schema to support Authy, sending TOTP tokens via SMS, verifying OneCode tokens, and protecting routes with two factors. The article also provides links to GitHub repositories for cloning the entire implementation or trying cURL examples.