One-Time User Authentication with SMS Using Django and Twilio

Twilio evangelist and maintainer of django-twilio here.

What you're looking to build is something very easy to do, I can outline the steps for you here:

• Create a Django model that stores a user's number and a generated passcode
• When a new user is created, take their number and SMS them the code using the Twilio REST API
• When they enter the passcode you sent them, cross reference it with the one stored in the database.
• If the number is right: verify them, if not, tell them it is wrong and offer to send them an SMS again.

You can use django-passcode as an app in your project. It exposes APIs to "register" a mobile number and "verify" through SMS based passcode. It uses mobile number and device id pair as unique. It also generates and returns a token for future authorization requests from mobile app. You can use Twilio or any other SMS api to send sms.

https://github.com/sgurminder/django-passcode

I appreciate your feedback for django-passcode