QR and barcodes are generated by Tickera based on the ticket code which is unique for each attendee/ticket. Each ticket may contain unique QR and/or barcode (along with the other elements) which you can arrange to suit your needs by using our ticket template builder . Both QR code and barcode ticket template elements are available and, if placed to the ticket template will display QR and/or barcode. If you're unsure which one you should use, we suggest you place both to the ticket.