McDonald's makes a *little* more sense and their POS systems can accommodate QR codes already.
While goods are priced in local fiat, suddenly you're accepting a single currency in 40+ countries and I have to imagine that might be attractive.
麦当劳更有意义，他们的POS系统已经可以容纳二维码了。
虽然商品是以当地法定货币定价的，但突然间，你接受了40多个国家的单一货币，我不得不想象这可能很有吸引力。