Here you will learn how to create a login system for Express applications secured with 2FA using Authy.

Learn more about this code in our interactive code walkthrough.

Create a free Authy account if you don't have one already, and then connect it to your Twilio account.

This project is built using the Express web framework.

1. First clone this repository and cd into it.

   $ git clone [email protected]:TwilioDevEd/authy2fa-node.git
   $ cd authy2fa-node

2. Install the dependencies.

   $ npm install

3. Make sure you have installed MongoDB. If on a Mac, you can use this guide to install it.

4. Export the environment variables.

   You can find your Authy Api Key for Production at https://dashboard.authy.com/. The default MongoDB URL when running MongoDB locally is shown below.

   $ export AUTHY_API_KEY=Your Authy API Key
   $ export MONGO_URL=mongodb://127.0.0.1:27017

5. Run the server.

   $ node .

   Alternatively you might also consider using nodemon for this. It works just like the node command, but automatically restarts your application when you change any source code files.

   $ npm install -g nodemon
   $ nodemon .
   

6. Expose your application to the wider internet using ngrok. You can click here for more details. This step is important because the application won't work as expected if you run it through localhost.

$ ngrok http 3000

Once ngrok is running, open up your browser and go to your ngrok URL. It will look something like this: http://9a159ccf.ngrok.io

1. Go to your https://dashboard.authy.com. On the menu to the right you'll find the Settings. Go to OneTouch settings and update the Endpoint/URL with the endpoint you created. Something like this:

   http://[your-ngrok-subdomain].ngrok.io/authy/callback

   If you deployed this application to production, the the Endpoint/URL should look like this:

   http://[your-domain].com/authy/callback

• No warranty expressed or implied. Software is as is. Diggity.
• MIT License
• Lovingly crafted by Twilio Developer Education.