source: https://www.reddit.com/r/interestingasfuck/duplicates/nh55at/german_ems_uses_qr_technology_to_discourage/ / https://www.ems1.com/scene-safety/articles/german-ems-uses-qr-technology-to-discourage-illegal-photography-at-emergency-scenes-nSnu8S5qUcqZYIf4/