You need Node.js installed on your machine to be able to follow along with this tutorial. You can find the code for this tutorial in this GitHub repository. So, a lot of the necessary details related to 2FA, validation, and security might be omitted from the tutorial. This doesn't only work with Google's Authenticator, but also with Microsoft's Authenticator, or any other TOTP authentication apps.įor simplicity, this tutorial only focuses on authentication with the authenticator app. You'll create a simple website that requires users to enable authentication with an authenticator app when they register and then to enter the code every time they log in. In this tutorial, you'll learn how to implement this process in Node.js. If the code is correct, they're allowed to log in. When the user needs to log in, they'll be asked to enter the code they see in the app. A 6-digit code will be shown and changed every 30 seconds. Then, the user can scan that QR code with their authenticator app.Īfter the user scans the QR code, they'll start getting time-based one-time passwords (TOTP) in the app. What happens is that after your user registers or enables 2FA on their account, you generate a secret and create a QR code based on that secret. One form of 2FA is using authenticator apps like Google's Authenticator. Using 2FA, the user can rest at ease that just because someone has their password doesn't mean that they can access their account. 2-Factor Authentication (2FA) adds an extra level of security to your website or app.
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