I know you're joking, but if you were told to write a ticket system today, what would you choose? QR codes are an international standard, have plenty of good l

I know you're joking, but if you were told to write a ticket system today, what would you choose? QR codes are an international standard, have plenty of good libraries to generate and process them, can store more information, have excellent error correction, and easily scan from odd angles. Other types of bar codes... not so much. https://en.wikipedia.org/wiki/Barcode#Types_of_barcodes https://en.wikipedia.org/wiki/Barcode#Types_of_barcodes