from machine import Pin,UART 
import utime
uart = UART(0, baudrate=9600)
led=Pin(16,Pin.OUT)
password= "1234"
while True:
    print("ENTER PASSWORD")
    if uart.any():
        data=uart.read(4).decode('utf-8').strip()
        if data==password:
            print("CORRECT PASSWORD")
            led.value(1)
            utime.sleep(1)
            led.value(0)
            utime.sleep(1)
        else:
            print("ENTER CORRECT PASSWORD")