Point-of-sale (POS) systems are primarily used to:

Point-of-sale (POS) systems are integral tools in the retail and service sectors, and their primary function is to track sales and inventory. They enable businesses to record transactions at the point of sale, which means they capture sales data in real-time as customers make purchases. This functionality provides valuable insights into sales patterns, allowing operators to identify which products are performing well and which are not.

Additionally, POS systems typically manage inventory levels by updating stock counts automatically with each sale. This means that businesses can maintain accurate records of their inventory, facilitating better purchasing decisions and reducing instances of stockouts or overstocking. Effective inventory tracking contributes to improved operational efficiency and helps ensure that popular items are always available for customers.

While POS systems may have features that assist with employee scheduling, marketing strategies, or organizing product displays, these are secondary functions. The core of what a POS system accomplishes centers on the sales transactions and inventory management, making "Track sales and inventory" the most accurate description of its primary use.