read_scard.py

from __future__ import print_function
import nfc
import sys


def connected(tag):
    servc = 0x100B
    service_code = [nfc.tag.tt3.ServiceCode(
        servc >> 6, servc & 0x3f
    )]
    bc_id = [nfc.tag.tt3.BlockCode(i) for i in range(3)]
    bc_name = [nfc.tag.tt3.BlockCode(3)]
    try:
        print(tag.read_without_encryption(
                service_code, bc_id
            ).decode('ascii')[2:11] + ',' +
            tag.read_without_encryption(
                service_code, bc_name
            ).decode('shift-jis')
        )
    except Exception:
        sys.exit("Read failed")
    return False

if __name__ == "__main__":
    clf = nfc.ContactlessFrontend('usb')
    rdwr_options = {
        'on-connect': connected
    }
    clf.connect(rdwr=rdwr_options)