# security of IoT devices

def smart_home():
    camera='stream video'
    smart_speaker = 'i stream voice'
    smart_sensors = 'i listen and stream to central device'

def central_sys():
    """I listen to device communications at home"""

    listen = 'open ports'
    identify = 'who is how'

    speaker = 'turn on the speaker'
    devices = 'router, camera, speakers'

    print (' {devices} online communicating at {port}')

