ACR122-U9

from smartcard.System import readers
from smartcard.util import toHexString
from colorama import init, Fore, Style
import time

# Initialize colorama
init(autoreset=True)

def detect_reader():
    r = readers()
    if len(r) > 0:
        print(Fore.GREEN + "Reader detected: " + str(r[0]))
        return r[0]
    else:
        print(Fore.RED + "No reader detected")
        return None

def detect_card(reader):
    connection = reader.createConnection()

    try:
        connection.connect()
        print(Fore.GREEN + "Card detected")
    except:
        print(Fore.RED + "No card detected initially")
        return

    while True:
        try:
            connection.connect()
            response, sw1, sw2 = connection.transmit([0xFF, 0xCA, 0x00, 0x00, 0x00])
            if sw1 == 0x90 and sw2 == 0x00:
                print(Fore.GREEN + "Card present, UID: " + toHexString(response))
            else:
                print(Fore.RED + "Card present but failed to read UID")
        except:
            print(Fore.RED + "No card detected")

        time.sleep(1)

if __name__ == "__main__":
    reader = detect_reader()
    if reader:
        try:
            detect_card(reader)
        except KeyboardInterrupt:
            print(Fore.YELLOW + "\nProgram interrupted and stopped by user.")