PSCS PS/2 driver,

Hello,

Is there any driver out there for a smartcard reader that uses the PS/2 
interface.  I have looked at a few smartcard reader that uses this interface, 
but there is nothing out for linux.  I would really like to look at the 
source of one of those drivers so I would know how to make one for my reader.  
For some reason, most of the readers that communicate through the PS/2 
interface seem to be discontinued?

Regards,
Ccool