   pinMode(LED1_PIN, OUTPUT);
   pinMode(LED2_PIN, OUTPUT);
   pinMode(LED3_PIN, OUTPUT);
+  pinMode(BUZZER_PIN, OUTPUT);
   pinMode(BUTTON_PIN, INPUT);
  
   digitalWrite(LED1_PIN, 0);
   digitalWrite(LED2_PIN, 0);
   digitalWrite(LED3_PIN, 0);
+  digitalWrite(BUZZER_PIN, 0);
 
   global_debug = debug;
   global_userid = -1;

// Unused
#define LED3_PIN 7

#define HANDSHAKE_STR "handshake"
#define KNOCK_STR "knock"


    global_state |= STATE_KNOCK;
    digitalWrite(LED2_PIN, 1);
  }
  else {
    if (global_debug) {
      Serial.print("DEBUG Unknown action ");
      Serial.println(gamearg);
    }
    return;
  }

  char *userarg = sCmd.next();
  if (userarg) {
