         {
           // Starting of a new sector ... try to to authenticate
           Serial.print("------------------------Sector ");Serial.print(nfc_handler.currentblock/4, DEC);Serial.println("-------------------------");
-           Serial.print("keys used:");
+            Serial.print("keys used:");
            
           if (nfc_handler.currentblock >= 5 * 4 && nfc_handler.currentblock <= 6 * 4)
           {

          {
            // Read successful
            Serial.print("Block ");Serial.print(nfc_handler.currentblock, DEC);
            if (nfc_handler.currentblock < 10)
            {
              Serial.print("  ");
            }
            else
            {
              Serial.print(" ");
            }
            // Dump the raw data
            nfc.PrintHexChar(nfc_handler.data, 16);
            

      }
    }
    else
      Serial.println("Ooops ... this doesn't seem to be a Mifare Classic card!");
  }
  lcd.clear();
  lcd.print("Balance :");
