https://nysa.eu/pl/aktualnosci/nowy-numer-tak-a-w-nim-min-wywiad-z-trenerem-stali-nysa-i-wspomnienie-pralata-mroza.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. ...