Short Form Specification
Prox–DU & Prox–SU
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DOC119224A Public Use Page 36/37
Interfacing with Contact Cards
ISO7816 asynchronous smart cards are accessible via standard PC/SC using Microsoft’s
library “winscard.dll”. This type of cards supports at least one of the asynchronous protocols
T=0 or T=1. No additional libraries or third-party software components are necessary to
integrate ISO7816 smart cards.
As defined in the PC/SC specifications, the Prox–DU and the Prox–SU devices handle all
the ISO7816-4 Inter Industry commands to interface ISO7816 asynchronous contact smart
cards.
In addition the Prox–DU device will support the following smart card events:
• Insertion
• Removal
As the Prox–SU has no capability to detect a smart card insertion or removal, the SIM/SAM
card will always be considered as inserted when the SIM/SAM card is into its connector.
Detecting an Insertion
The contact reader/writer will check if a smart card is inserted into the slot.
When a smart card insertion is detected, its properties are recorded and a CCID insertion
notification message will be generated.
Detecting a Removal
A smart card being removed from the slot is detected by the contact reader/writer.
When a smart card removal is detected, a CCID removal notification message will be
generated.
ATR for Contact Smart Cards
The Answer To Request (ATR) returned by a contact smart card is compliant with the
ISO7816-3 specifications.
The Prox–DU and the Prox–SU will return the smart card ATR after a smart card power up.
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