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TOTP with SMS 2FA fallback

By Twilio

  • Verify
  • Twilio
  • Quick Deploy
  • Applications

This app will show you an example of how to build a time-based one-time passcode (TOTP) experience with fallback to SMS or WhatsApp using the Twilio Verify API.

This sample uses function templates to quickly create and deploy serverless functions you can use to interface with the Twilio Verify API from your production application.

How it works:

  1. User verifies their phone number
  2. User sets up TOTP authentication with app of their choice
  3. User can log in with either method: TOTP or SMS/WhatsApp OTP

For more information, check out this overview of TOTP. For more best practices including retry logic and channel fallback, check out best practices for managing retry logic with SMS 2FA.

Launch and test this app in a few minutes with Quick Deploy. No server needed. Quick Deploy will automatically configure and deploy this app using Twilio Functions. Learn more about Twilio Functions
Step 1:Log in to Twilio
Step 2:Set up your application
Step 3:Deploy your application and try it out!
Deploy this application
This will use the details entered above to deploy your application to Twilio Functions. You will be able to view the application in the browser and edit it using the Functions UI. Learn more about Twilio Functions
Deploying applicationThis might take up to a minute
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Step 4:View and edit your application
Once deployed, any changes to the fields above will not be applied to your app. To make changes, here are two options
Refresh the page, edit customizations and re-deploy the application
Edit your customizations directly in code
Why use Quick Deploy?
No coding required to launch
Easy to edit and iterate post launch
No server management
Scales automatically
Secure by default

Don't see what you want? Request a code sample Explore Docs

Questions about scaling, pricing, or which products/features to use? Get a consultation

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