McDonald can save time for servers, cooks , Error Control point of sales systems in restaurants also eliminate, or at very least reduce, the rate of human error . Reduce Paperwork a POS system may include a number of automated reports for features, such as payroll, marketing tools, customer data and accounting tools, that eliminate the need for paperwork or additional systems. Faster Transactions. Using this system, the restaurant is able to keep customers and attract customers and get what they need in the easiest way.