A checkout system is a technology used in retail environments to facilitate the process of purchasing goods. It typically includes hardware like cash registers or point-of-sale (POS) terminals, along with software that manages transactions, inventory, and customer data. These systems help streamline the payment process, making it faster and more efficient for both customers and retailers. Modern checkout systems often support various payment methods, including credit cards, mobile payments, and digital wallets. They can also integrate with other systems, such as inventory management and customer relationship management (CRM) tools, to provide a comprehensive view of sales and customer interactions.