Point-of-sale (POS) is the location where a transaction occurs: the shop, market stall, restaurant till, or online checkout where the customer pays. In food retail, the term also covers the electronic systems that process sales, track inventory, and capture data on purchasing patterns, the modern till that feeds category management and demand forecasting. POS is prime marketing territory: confectionery, drinks, and snacks clustered at checkouts exploit impulse buying, which is why public health policies increasingly restrict the placement of unhealthy products at tills and store entrances. For food businesses, POS data reveals what sells, when, and to whom, informing ranging, promotions, and waste reduction. The abbreviation POS appears throughout retail management literature, distinct from “point of sale” materials, the display units and signage that dress the selling space.