Accessing the 2nd card reader

Richard richard at
Wed Aug 11 09:47:32 CEST 2010

Hello everyone,

I have connected two card readers to my computer, but want only to use
the 2nd one with GnuPG 2/scdaemon.
Both are PCSC readers:

$ opensc-tool -l
Readers known about:
Nr.    Driver     Name
0      pcsc       SCM SPR 532 [Vendor Interface] (21250837209929) 00 00
1      pcsc       REINER SCT CyberJack pp_a (8928928328) 00 00

However, GnuPG only recognizes the 1st reader:

$ echo scd getinfo reader_list | gpg-connect-agent --decode | awk
'/^D/ {print $2}'

How can I force GnuPG to use the 2nd reader only? I don't know what
which reader-port option to set in ~/.gnupg/scdaemon.conf.



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