You could write your own GINA.
There is support for smartcard logon already if you're trying to get an
additional ("something I physically have") authentication factor.
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Drew Cooper [MSFT]
This posting is provided "AS IS" with no warranties, and confers no rights.
Mike R said:
I was wondering if there is any software or any way to use a normal USB
thumbdrive as a login security token for windows XP.