Good luck. SmartCard commands are typically specific to the particular card involved, and depending upon what the card is and what it is used for, you will likely never be able to get that information. The ISO specification (It has been too long... I don't even remember which one it was.) only defined a very few "generic" commands, and as I recall, they were just suggestions anyway. I used to work for a company that developed its own SmartCard reader, and just to get sample cards and the command documentation to test with the reader, we had to jump through all kinds of legal hoops with the SmartCard vendors, involving all kinds of Non-Disclosure agreements, etc. Don't hold your breath... :sigh: Tom