User manual

SCM3712 REFERENCE MANUAL 31
6.3.3. PC/SC 2.0 compliant ATR
6.3.3.1. Determining the technology of the user credential
The ScardControl method of PC/SC(see http://msdn.microsoft.com/en-
us/library/aa379474(VS.85).aspx) should be used to send the 0x90 IOCTL to SCM3712 in order to
determine what type of technology is the user token based on. The output buffer is a BYTE with the
following meaning:
Technology
Value
MIFARE1K
0x01
MIFARE4K
0x02
MIFARE Ultralight
and Ultralight C
0x03
ISO14443-4A
DESFire
0x04
FeliCa
0x05
Topaz
0x06
ISO14443-4B 0x07
Once a user credential is selected, the driver constructs an ATR from the fixed elements identifying
the token. Depending on the user technology this ATR can be analyzed as described hereunder.