I am in the process of converting from a 32 bit to a 64 bit Linux machine. In the past I was able to use the SPE API for 32 bit Linux along with the 32 bit Linux ifdokccid device driver. However, using the speapi_lnx-amd64-1.0.1 along with ifdokccid_lnx_x64-3.7.0 isn't working for me. For example, when I attempt to do an SCardCCIDVerifyPIN function call, I get back a 6B80 APDU response. I noticed that the ifdokccid for 64 bit Linux requires PCSC lite 1.5.5, but the SPE API requires PCSC lite 1.2.9-beta7, which I'm guessing is not compatible. I am wondering if anybody has any ideas about how I should proceed to get my OMNIKEY 3821 reader to work in a 64-bit Linux environment?