• Home
  • >
  • One-Time Passcode Verification (OTP)

One-Time Passcode Verification (OTP)

By Twilio

  • Popular
  • Verify
  • Twilio
  • Quick Deploy
  • Applications

This app will show you an example of how to build a one-time passcode (OTP) experience using SMS, WhatsApp, voice, or email* with 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. The interface provided shows off available features including channel selection and language preference.

otp code exchange template view with phone number input and channel selection

How it works:

  1. User enters their phone number or email
  2. App generates an authentication token
  3. App sends the token via selected channel to the user
  4. User enters the correct token
  5. App verifies the token

For more information, check out this blog post on serverless phone verification. For interface best practices including retry logic and channel fallback, check out best practices for managing retry logic with SMS 2FA.

*Note: email channel requires additional configuration, follow the instructions in the docs.

Report this template

Quick Deploy to Twilio BetaGet code Use Twilio CLI
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
Log InSign Up
Step 2:Set up your application
Where do I get this?
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
Success! Your application has been deployed.
Oops...something went wrong. Retry
Step 4:View and edit your application
Go to live 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

There was an issue loading the page.

Please try again in some time.

We can’t wait to see what you build.
Products
Solutions
Docs
Company