While manufacturing has always been a numbers game — meeting quotas, balancing demand and supply, and managing downtime — discrete and process manufacturers have always relied on yesterday's data to forecast what tomorrow would bring. The industry is at an interesting crossroads. Not only do we now have quick and affordable access to computational power, but we can also collect data from a new source: machines. It's difficult to overestimate the increased efficiency of such capabilities in terms of uptime, productivity, and other important performance indicators. That is why this data-driven approach to manufacturing is dubbed Industry 4.0. At the forefront of this digital revolution are rugged mobile devices. Not only are they convenient to tote and use, but developments in processing power and memory enable today's mobile devices to act as powerful data processors on the edge, near to information sources. Additionally, their form factor and familiarity with everyday life...