We are getting more and more insecure in this world. There are almost no secrets that can be kept. The other day I learnt on TV that the commonly used locks can be opened within a few minutes by the skeleton keys of the burglars. And the figure codes of our credit cards may be stolen by criminals with the money. So the skilled burglars can invade our houses at any time without forcing an entry or damaging our doors and locks. We cannot help worrying about the safety of our property all day long. For one day when I return home I may find a ransacked room. I think it’ll be a commonplace and I needn’t be taken by surprise. It is also possible that the money in my bank card can be withdrawn by someone else in the future.