“…Sensor networks, hardware and software surveillance elements, and (wearable) service technologies are currently among the most promising elements to monitor and interact with physical environments to detect, react to, and possibly prevent risky situations in various fields and particularly in work areas, such as industrial plants, building construction areas, or excavation sites . In industrial areas, serious damages may be caused by falls, substance losses (e.g., gas, water), use of tools and presence of moving transportation machineries .…”