public void handleMessage(Message msg) {
    int status = msg.getData().getInt("status");
    switch (status) {
        case Status.INITIALISED:
        case Status.SCANNER_POWERED_ON:
        case Status.READY_TO_SCAN:
        case Status.FINGER_DETECTED:
        case Status.RECEIVING_IMAGE:
        case Status.FINGER_LIFTED:
        case Status.SCANNER_POWERED_OFF:
        case Status.SUCCESS: {
            setState(State.FINGERPRINT_SCANNER_INITIALIZED);
            break;
        }
        case Status.ERROR: {
            setState(State.FINGERPRINT_SCANNER_FAIL);
            break;
        }
    }
}