A year ago we looked at the legal and cybersecurity issues of allowing personal mobile devices—especially smartphones—on the plant floor. In this article we look at the advantages and technical considerations of deploying wireless devices on the plant floor. We especially look at user interfaces and their design, the handling of alarms, mobility issues and the future that brings AI and virtual reality/augmented reality to the world of mobile devices, freeing operators to accomplish tasks that weren’t easily possible with older, fixed HMIs.