Phone number sign-in done right.

Digits is a free, white labeled solution for verifying your users through their phone numbers - without the headache of passwords. Digits can be styled to look and feel like the rest of your app, and simplifies the complex process of SMS-based authentication.

Digits for Web makes it easy for you to integrate phone number sign up and login into your website, to complement your iOS and Android apps. Digits verifies the user’s phone number using the same global, reliable infrastructure as Twitter, with a simple customizable user interface that easily integrates into your app.

Check out our installation page to get started.