PC/SC Guide
Prox–DU & Prox–SU
www.gemalto.com
DOC119811A Public Use Page 89/129
Known issues and limitations with
all the operating systems
The Prox–DU and the Prox–SU devices have the following limitations:
• The contactless interface will only support the T=1 protocol.
Consequently any connection requiring the T=0 protocol will not be accepted by the
contactless interface.
• Multi-activation of contactless smart cards is not supported.
Consequently the first smart card detected in front of the reader/writer will be
activated. The remaining smart cards will be ignored.
• The communication with the contactless interface and the contact interface shall be
exclusive.
Consequently the application shall not use the two interfaces simultaneously. Else
communication errors can occur.
Known issues and limitations with
Windows operating systems
The Prox–DU and the Prox–SU devices have the following limitations when operating with
Windows operating systems:
Operating
System
Known issue Workaround
Windows XP
Vista
Seven
Prox–DU & Prox–SU:
Simultaneous use of
the contact and the
contactless interface
may freeze the device
Prox–DU: Do not use the the dual interface
card protection in off mode
Prox–SU: Do not use the two interfaces
simulatneously
When the device is frozen, unplug and
replug the USB cable to recover a proper
operation
Windows XP Prox–SU:
When the computer is
restarting it may
happen the internal
SIM/SAM card is not
detected by the device
Unplug and replug the USB cable to
recover a proper operation