The Secret Codes

　
The Secret Codes
　
This week we learned the history of the secret codes.
　
It is interesting and amazing to discover the profound
　
meaning of the secret codes by reading the text . Since
　
people have been starting to use secret codes in the
　
ancient time, the secret codes have still been creating
　
constantly until nowadays.


The secret codes are all-purpose: we use to protect
　
our personal information. For instance, computers,
　
e-mails, cell phones or bank accounts in our daily lives
　
are necessary to use pass words as the key to get the
　
important private information.


Countries use secret codes to delivery the secret
　
confidential information or trade confidentiality to
　
each other. It also used to transmit the military actions.

　
The secret code are useful and convenience in life.
　
But it still has some problems: it is really bothersome
　
that you forget the pass words when you just want to
　
sign in the e-mail, bank account, or even remove the
　
safety system before entering into your house.