What is a QR Code? A QR code is a 2-D barcode that can be scanned by a smart phone's camera and transfer information. It is the black and white square on the card. It will take you to a website where you can order online directly. You may print the card above, take a picture of the QR, and it will take you directly to http://www.tatepublishing .com/ bookstore/book, where you can order my cookbook. Tip: you must download the free QR application with the most stars, for to it to work.