Detect dynamic smart card insertion and removal.

monitorcard.py

from smartcard.System         import readers
from smartcard.CardType       import AnyCardType
from smartcard.CardRequest    import CardRequest
from smartcard.CardConnection import CardConnection
from smartcard.util           import toHexString, toBytes
from smartcard.CardMonitoring import CardMonitor, CardObserver
from smartcard.util           import *
from time import sleep

def check_reader():
    cardtype = AnyCardType()
    cardrequest = CardRequest( timeout=1, cardType=cardtype)
    try:
        cardservice = cardrequest.waitforcard()
    except:
        print "No Card in any reader."
        return
    cardservice.connection.connect()
    print "%s: %s" % (cardservice.connection.getReader(), toHexString( cardservice.connection.getATR()))
    #apdu = "a0a4000002"
    #response, sw1, sw2 = cardservice.connection.transmit( toBytes(apdu), CardConnection.T0_protocol )
    #print 'response: ', response, ' status words: ', "%x %x" % (sw1, sw2)

# a simple card observer that prints inserted/removed cards
class printobserver( CardObserver ):
    """A simple card observer that is notified
    when cards are inserted/removed from the system and
    prints the list of cards
    """
    def update( self, observable, (addedcards, removedcards) ):
        for card in addedcards:
            print "+Inserted: ", toHexString( card.atr )
        for card in removedcards:
            print "-Removed : ", toHexString( card.atr )

def monitor_reader():
    try:
        print "Insert or remove a smartcard in the system."
        print "This program will exit in 10 seconds"
        print ""
        cardmonitor  = CardMonitor()
        cardobserver = printobserver()
        cardmonitor.addObserver( cardobserver )
    except:
        return

if __name__ == "__main__":
    check_reader()
    monitor_reader()
    while 1:
        sleep(1000)