1. A device on the trolley could monitor everything placed in it, check with past spending patterns and nudge customers: "you have just passed the Oriels, which you usually buy here." 安置在购物车里的装置可以监视被放进去的每件商品,并检查该顾客过去的消费模式并向顾客发出提醒,比如:“你刚刚经过Oriels,那是你经常购物的地方”。