Smart card (usually the size of a credit card) with a microchip embedded in it.Some smart cards contain a microelectronic chip that requires data interaction through a reader.Smart cards come with CPU, RAM, and I/O, and can handle large amounts of data without interfering with the host CPU.Smart cards can also filter incorrect data to reduce the burden on the host CPU.Users can complete the usual keys, capital settlement, attendance and some control operations through an IC card, such as lC card to open the door, IC card dining, shopping, entertainment, meeting, parking, patrol, office,service charge and other activities.

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