The D8 includes RS232 and USB port connections. It is used as a contactless smart card reader in generally, but it can be expanded dual Mode Smart Card Reader. Meantime D8can adds 2-3 SAM cards for choice of consumer. The ISO 14443 type A and B cards can also be accessed on request. It is mainly used in parking-meter, door-control, Healthcare—medical identification, transportation, oil-control, access control identifications.