FTA: "Furthermore, we decided that we would require a setup that actually worked. Given that we did not have any AR hardware available (eg AR glasses such as a

FTA: "Furthermore, we decided that we would require a setup that actually worked. Given that we did not have any AR hardware available (eg AR glasses such as a Microsoft Hololens), we quickly built one ourselves using a production helmet and a webcam." Medium images sometimes take a while to load, but if you wait you can see their "webcam on a hard-hat helmet" setup for the demonstration to the judges. The overlaid AR + video feed then shows up on a monitor.