I remember the I/O’s used to ask you questions in Thai when you were on an Ed visa learning Thai language, just to see if you knew anything when you went for your extension at CW
Not sure if they will ask you to perform a crocodile kick
they are old school and took over for barcodes around the year 2001 even through they were created in 1994 in Japan by Denso Wave company
The QR code stated to really take off around 2010 but the average person started using them with social media apps like Line when 3g became inexpensive (2013 ish)…now with 5g being inexpensive people are using it for more endeavors like personalized payment systems
They will keep evolving until something better comes along