Our team researching disruptive grocery shopping concepts has built a prototype super market in the Stibo Accelerator. It's 2x2 mtr. and only "sells" cereal. But it's really, really cool to have a physical store with shelves, shopping cart and of course 30 interactive touch screen price-tags powered by Raspberry PIs.
Huge thanks to the project partner, REMA1000, for sponsoring this!