FreeWater’s new book How to Make a Free Product Company introduces six innovative free vending machine models designed for anyone to build and customize. Each model adds smarter security, more personalized advertising, and new revenue streams — culminating in a machine that prints real-time labels with ads, QR codes, and AR layers. By open-sourcing what could have been multiple patents, FreeWater is empowering entrepreneurs to reinvent vending and transform how physical produ