Hi!
We are developing an Open Source security token (based on the OpenPGP
Card) which works as a smart card adapter. (
https://www.privacyfoundation.de/crypto_stick/ )

We discovered that Windows seems to cache each USB smart card adapter
(probably each USB device) which was once connected to the system
according to its serial number noted in USB interface. To avoid privacy
issues due to this behaviour we would like to replace the individual USB
serial number of the Crypto Stick with a generic one (e.g. 0000...). I
am wondering if this might result in any other problems especially when
using two or more Crypto Sticks at the same time in the same computer.

Do you assume any problems with a generic USB serial number especially
when using the stick (or several sticks at the same time) with OpenSC?

Regards
Jan
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