I know you&#x27;re joking, but if you were told to write a ticket system today, what would you choose?<p>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.<p>Other types of bar codes... not so much.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Barcode#Types_of_barcodes" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Barcode#Types_of_barcodes</a>