¿Cómo implementar el login con SMS?

What is passwordless authentication and how to implement it?

Passwordless authentication is revolutionizing the way users access their online accounts. Instead of traditional passwords, more convenient and secure methods are used, such as sending codes via SMS or email. In this module, we will learn how to implement this technology with the help of Auth0 and Twilio, allowing you to offer your users an effortless login.

How to implement SMS login using Auth0 and Twilio?

To implement passwordless authentication with SMS, we start by configuring Auth0. Here are the steps:

1. Configure Auth0: Login to the Auth0 dashboard, go to the Authentication section and select "Passwordless". Activate the CMS option to initially integrate with Twilio.

2. Create a Twilio account: Sign up for Twilio and access the Dashboard to get the necessary SID and Auth Token. Don't forget to purchase a free trial number that allows you to send SMS.

3. Configure Twilio in Auth0: In the Auth0 dashboard, enter your Twilio SID and Auth Token, and the trial phone number. You can customize the text message that users will receive; for example, translate it into Spanish: "Tu código de verificación es...".

4. Test: With everything set up, run a test from the Applications section of Auth0, making sure to enable the "Identity First" option. Enter your phone number to receive the SMS and verify that it works correctly.

5. Customize Universal Login: In the Auth0 Branding menu, go to the advanced options and, in the Login tab, select the template that enables passwordless authentication.

// Example of customization in Auth0 template{ template: "Log Passwordless", options: { language: "es", email: "[email protected]" },}

What are the advantages of using SMS authentication?

Implementing passwordless authentication via SMS offers several significant benefits:

• Ease of use: Users do not need to remember complex passwords, which reduces frustration and improves the user experience.
• Cost reduction: It is estimated that each password reset can cost around $70. By eliminating passwords, the costs associated with password recovery decrease.
• Improved conversion rates: E-commerce studies have shown that the use of passwordless authentication can increase conversions by up to 50%.

Practical recommendations?

• Security first: Even if passwords are not used, it is crucial to ensure correct storage of temporary codes and manage unauthorized access.
• Consider other SMS providers: If you prefer not to use Twilio, it is possible to integrate it through Auth0's Management API, offering more flexibility.
• Test and evaluate user acceptance: Perform A/B testing to determine how your user base responds to the switch to passwordless and adjust accordingly.

Module Challenge

One of the most interesting challenges of this class is to analyze how we could implement an SMS code sending architecture without outsourcing the service. We invite you to think of a solution and share it in the comments, either through a detailed description or a diagram - share your ideas and keep learning with us!

Coming soon we will explore passwordless authentication using email, another powerful tool for when you need to leave passwords behind - don't miss it!