Hello, cash register programs for online cash registers are a type of application software that is truly indispensable from the point of view of practical applicability. Without them, the seller of the outlet simply will not be able to fully use the functionality. The program for working with the online cash register is usually already pre-installed in the device by the manufacturer. However, the user has the right to install any other cashiering software (https://payadmit.com/features/cashier-services/) at his own discretion. The choice of a program for working with an online cash register is largely determined by the specific model and hardware configuration.