GuestTracker GT|POS Retail Point of Sale Software is designed for retail. Our GT|POS point of sale software menu system is designed to create sub-menus for each Point of Sale POS menu. Our unique POS system design settings include POS item setup and price defaults and taxes. GuestTracker GT|POS POS Software has full integration support for most POS touch screen monitors. POS system screen size of 19" or 21" size is recommended.