The card reader with scanning a barcode is incredibly obtrusive. It requires you to carry the card/bank specific reader with you. So when you're on the go you a

The card reader with scanning a barcode is incredibly obtrusive. It requires you to carry the card/bank specific reader with you. So when you're on the go you and want to pay something online with a debit/credit card, you need to whip out the card and the specific reader. And it included that annoying scanning a barcode on screen AND confirming € amount. And the readers had 2 options. Sign and confirm (?). Why they couldn't incorporate this into the barcode? It was all done because it definitely lowered mistakes and was more secure than card number and CVV to pay online.