Luca card actually means swiping a card in Cantonese, but the card here is not an ordinary bank card, but a credit card in particular. It is not a "Luca card" if you don't pay by credit card.

In the era when online payment is not developed, when you go to a convenience store to buy something, you will hear the clerk ask, "Is Lucadine better than cash? (swipe your credit card or pay cash), Luca Card is a common action in modern capitalist society.