This lesson told us that although we are common people, we use secret codes in our daily life .When we locked the bicycle, we used numerical look on it. When we went to supermarket to buy something that merchandises are given bar codes for people to identity them. Also, we can know that the origin of Enigma code. First, it was developed to communicate with brunches of companies. And then German military found that Enigma code was a great apparatus to create unbreakable codes.
Although many people wanted to crack Enigma code, they couldn’t crack the impediments of Enigma lode until Alan Turing cracked it .Those people who in the Alan Turing were unrecognized after they had died.
Reaction
After I read the lesson, “secret codes for spies?” I knew that although common people were not spies, they all used secret codes every day such us bar codes and PIN .Also, I knew the origin of Enigma code, and how it developed in German military. It was a special and great invention for military.
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