Source: http://www.wired.co.uk/news/archive/2013...

Paulsson successfully redesigned the day-to-day operations of the bar, creating an efficient and speedy service. "When I started no one had any idea what was being sold or at what quantity. I didn't like that at all. So what I started doing was itemising the till, with the intention of exporting the data from the till into a database -- I have now made this completely automated thanks to the Pi."