What describes the system where customers serve themselves through a digital interface?

The system where customers serve themselves through a digital interface is best described by the term "kiosk." Kiosks are standalone digital machines that allow customers to place orders, customize their selections, and complete transactions independently, without the need for direct interaction with a staff member. This self-service model enhances the customer experience by providing convenience and allowing for quicker service. Customers can usually review menus, make choices, and pay all in one place, leading to a streamlined ordering process.

While touch screen ordering is a feature found within kiosks, it doesn't encompass the entire concept of a kiosk itself, which integrates hardware and the user interface as a complete system. Mobile ordering refers to placing orders through smartphones or other mobile devices, which involves a different user interaction model as it typically occurs away from the restaurant. Table service involves waiting staff taking orders at the table, which is the opposite of a self-service system. Hence, the kiosk encapsulates the essence of customers serving themselves through a digital interface effectively.