How to make auto login in shopify site?

@domenico 

To set up auto-login on your Shopify site, you will need to create a custom script or app that automatically authenticates the user when they visit your site. Here is a step-by-step guide to help you achieve this:

1. Create a script or app that stores the user's login credentials securely. This can be done using server-side scripting languages such as PHP, Node.js, etc.
2. Implement a mechanism that checks if the user is already logged in when they visit your site. This can be done by checking for a session cookie or token that identifies the user.
3. If the user is not already logged in, trigger the auto-login process. This can be done by sending the stored login credentials to the Shopify login endpoint and obtaining an authentication token.
4. Store the authentication token securely in the user's browser, so they don't have to log in each time they visit your site.
5. Implement a mechanism that refreshes the authentication token periodically to prevent it from expiring.
6. Test the auto-login process thoroughly to ensure it works seamlessly for your users.

Keep in mind that auto-login can pose security risks if not implemented correctly, so make sure to follow best practices for handling and storing user credentials securely. It's also a good idea to inform users about the auto-login feature and give them the option to opt-out if they prefer to manually log in each time.