Turton this is what you will find with QR card.
Imagine having a prediction always in sight making you choose a card and lose it in the deck.
Now say that the card is trapped in another dimension and turn the QR card over... Scan the QR code and a video will appear on the spectator's mobile phone with the selected card .. Which soon after will disappear and a message will appear "see on the table" and on the table instead of the QR card there will be the card selected at the beginning!! Leave a magical, visual and modern memory!
Immediate reset as there is not a single QR card therefore repeatable several times!