JuDyi4.0 is a web-based mobile application designed for JunkerDynamicHeater MC, a heating process for extrusion billets. Whether or not the app is installed on a smartphone or tablet PC, it will show current process data or historical data in the form of a daily, weekly or monthly record anytime, anywhere based on a complete system overview. Selected components are tagged with QR codes. Focusing the camera on the code will identify the component. Descriptions, bills of material, drawings – all information is available at a glance.