Smart Card Reader States

The following table defines the smart card reader states.

State	Meaning
SCARD_UNKNOWN	Indicates that the reader driver has no information concerning the current state of the reader.
SCARD_ABSENT	Indicates that there is no card in the reader.
SCARD_PRESENT	Indicates that a card is present in the reader, but it has not been moved into position for use.
SCARD_SWALLOWED	Indicates that a card is in the reader and in position for use. The card is not powered.
SCARD_POWERED	Indicates that the card is powered, but the reader driver has no additional information concerning the state of the card.
SCARD_NEGOTIABLE	Indicates that the card has been reset and is awaiting PTS negotiation.
SCARD_SPECIFIC	Indicates that the card has been reset, and specific communication protocols have been established.