POS system
A POS (point of sale) system is the software, and the hardware around it, on which sales happen: items, receipts, payment methods, stock and reports. The register is the part that issues compliant receipts; the POS runs the whole business around it.
Konty is a cloud POS system for hospitality and retail: the same application on a computer, tablet and in the browser, with fiscal compliance built into the register. Products