In this tutorial you learned how to authenticate a user using their mobile number. To achieve this you used the Verify API to send the user a code, collected this code from them and sent it back to the Verify API to check.
You probably wouldn't want to use this approach in place of passwords, because SMS isn't a secure enough medium for that, but it can provide some reassurance that a user is who they claim to be and is therefore a reasonable strategy for step-up authentication.
Find out more about the Verify API using the following resources:
- Code on GitHub - the source code for this tutorial
- Verify API documentation - guides, further tutorials and code snippets to help you work with the API
- Verify API reference - detailed API documentation
Step-up AuthenticationAdd an extra layer of security when users perform sensitive tasks