Card free payment means that the payer can transfer acceptable monetary claims to the payee without reading the physical card through the acceptance equipment through the Internet, mobile Internet, wireless LAN and other channels.
Lao Wu, the owner of the restaurant, has opened wechat payment. When customers pay, they only need to scan the QR code on the bill with their mobile phone, that is, they can use wechat to pay the corresponding fees does not belong to card free payment according to the above definition.