https://nysa.eu/pl/aktualnosci/upaly-nie-zostawiaj-dzieci-i-zwierzat-w-samochodzie-kilka-minut-moze-miec-tragiczne-skutki.html
Each object on the "Learn the history" route is marked with a special plate with a QR code indicating the use of this technology. In addition, we have a camera in each of the smartphones. ...