@yogthos@mas.to you should try bringing a qr code of the eicar test string around vending machines to see if they crash

apparently some surveillance camera software will decode qr codes it detects automatically, and will then get killed by antimalware protection on the machine if said qr code contains a virus signature. (source: https://www.revk.uk/2020/01/eicar-test-qr.html)