Actually no, unfortunately. I am a judge in a international legal mooting competition for universities. Done it before. Last year in Swansea! Also Singapore, Brisbane, and other places!
In a beach restaurant in Brighton, you had to order by QR code at your table. My QR code did not work. I summoned the waitress who didn't believe me, and said 'it must work'. Finally, as I was about to walk out, she relented, and accepted an oral order!