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.
A university has opened the Campus All-in-one Card service, which can be used not only as a door ban card and library card, but also in restaurants and supermarkets, which is convenient for teachers and students does not belong to card free payment according to the above definition.