The QR is on each card by default and is completely optional. The QR is a good failsafe for older phones that may not have tap capabilities or for tablets. These are typically phones that are older than 2018. 99% of newer phones have tap abilities. All items come with both the tap ability that scans natively on smartphones without using an app, and a QR code that can be scanned with a camera. The QR is not a sticker. It is UV printed permanent paint or it is engraved, depending on the card.