How can customer information be retrieved in a Shopify theme using Liquid?

Retrieving customer information in a Shopify theme is primarily accomplished by accessing Liquid objects, specifically the "customer" object. Liquid is a templating language used in Shopify to allow developers to create dynamic and data-driven themes. The "customer" object contains various properties and methods that represent the customer's information, such as their name, email, and order history.

When a customer is logged into the store, the "customer" object is automatically available in Liquid, enabling theme developers to seamlessly display or use customer data on the storefront. This integration makes it easier to personalize the shopping experience based on customer-specific information.

Other methods mentioned, such as utilizing JavaScript functions or relying on Shopify Admin API integrations, are not ideal for directly retrieving customer information in the theme context. JavaScript operates on the client-side and would not have direct access to Liquid variables. Similarly, the Shopify Admin API is a tool for backend interactions and is not intended for use in theme files directly, while querying the database directly is not permitted as Shopify abstracts away the database access for security and performance reasons.