Hi ! I followed the " pcscd debug output on Mac OS X " instructions, but when I plug in my USB reader, there is no other log output. It looks like that only CCID USB device is supported on my MacOSX 10.8 , Is the pcscd version(which is 1.4.0) too low? 在 2016-01-18 16:04:28，"Ludovic Rousseau" <ludovic.rousseau@gmail.com> 写道： Hello, 2016-01-18 4:12 GMT+01:00 liuddd <liudy75@163.com>: Hello! On my MacOSX10.8 system, I put one USB smart card reader(not of CCID class) driver in /usr/libexec/SmartCardServices/drivers, but the pcscd didn't start after I plug the reader in, any other steps should I take to get my driver running? Read " pcscd debug output on Mac OS X " http://ludovicrousseau.blogspot.com/2011/07/pcscd-debug-output-on-mac-os-x.h... Bye -- Dr. Ludovic Rousseau