5.wave and pay
5.刷付
Definition: a system of paying for goods or services by moving a credit card or mobile phone in front of a special machine which automatically reads the information.
定义：一个自动付费系统，消费者只需要在特殊的机器前挥动信用卡或手机，信息就会自动被读取。
Quotation: Mobile phone firms team up to develop wave and pay system ... Consumers will be able to pay for sandwiches, drinks and train tickets by placing their phones close to a reader similar to the Oyster card system on the London Underground.
引文：手机公司联合开发刷付系统……以后消费者把手机靠近类似于伦敦地铁站牡蛎卡系统的读取器，就能够为三明治、饮料和火车票付费。