[SmartcardServices-Users] Store key on NFC tag that is acceptable to sc_auth?

[Henrik Brautaset Aronsen]

Is it possible to generate a key and store it on an NFC tag, so that it 
shows up with "sc_auth hash"?

I'm trying to login to OSX using NFC using info from 
http://support.apple.com/kb/TA24244.  The tag I have is a 13.56MHz 
ISO14443A & NFC Type 2 compliant NTAG216 RFID chipset, and I'm using a 
ACS ACR122T USB reader.

Here's some output from "system.log":

17/01/15 21:04:28,005 com.apple.SecurityServer[71]: reader ACS ACR122U: 
state changed 16 -> 34
17/01/15 21:04:30,066 com.apple.SecurityServer[71]: token in reader ACS 
ACR122U cannot be used (error 229)
17/01/15 21:04:33,567 com.apple.SecurityServer[71]: reader ACS ACR122U: 
state changed 32 -> 18

And from "opensc-tool -l -v":

# Detected readers (pcsc)
Nr.  Card  Features  Name
0    Yes             ACS ACR122U
      3b:8f:xx:yy:zz Unsupported card


Best regards,
Henrik