At 2AM on a cold Saturday night I was standing on the upper level of a nightclub, observing the party below. The dance floor has gone wild and the bar is crowded. Behind the bar, couple of waiters were running wild trying to keep up with the orders. And they…

Having worked with card payment solutions, I formed a habit of noticing the POS hardware when waiting in line at the register. Konzum (largest supermarket chain in Croatia) and IKEA Zagreb both use the same POS terminal made by the French company Ingenico. …