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Using multiple usb readers reduce read/write speeds #67

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maysam-shirazi opened this issue Aug 11, 2019 · 2 comments
Closed

Using multiple usb readers reduce read/write speeds #67

maysam-shirazi opened this issue Aug 11, 2019 · 2 comments

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@maysam-shirazi
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I'm using ubuntu 16 with Java 1.8 to run my app to read/write some smart cards with GemPC usb readers. I found that everything is ok when I'm using a single reader, so when I add new reader two read/write two cards synchronously duration is doubled. it seams that usb readers do not work parallel and APDU commands are in one queue for all of usb readers! I test it in Microsoft WIN7 so it's working(parallel process for multiple usb readers).
I'll appreciate for any help.
@LudovicRousseau
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I think it is a bug/limitation of the Java PC/SC API.

@LudovicRousseau
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You may want to use https://github.com/intarsys/smartcard-io instead of the implementation from Oracle.

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@LudovicRousseau @maysam-shirazi