Educational Software/Game

Each person with their phone will scan QR codes on cards spread around a room, say 30. Each card has a question and multiple choices answers. The person will scan, and see on the screen the question, and a countdown of cards still not scanned so he/she knows how many cards are still left in the room. As the person presses the answer, it shows a green checkmark if it is correct or a mark for it being wrong and the correct answer blinking on the screen while the others are faded..... It's not possible to scan another card if the player don't give an answer. So it's necessary to mark something even if it's wrong.... The instructor in the room sees a dashboard in his/her device showing how much cards were scanned, how many answers were right, how many answers were wrong, and a list showing the questions that had wrong answers. The dashboard can be projected in the room.