History of Passwords
Passwords have existed since ancient times long before the digital evolution began. In ancient history, they were referred to as watchwords, or words and phrases used to identify a friend or enemy. Polybius, a Greek historian, wrote about the use of these watchwords in military ranks. He described an example watchword as "a wooden tablet with the word inscribed on it". A soldier would receive the watchword, "[take] his leave, and on returning to his quarters passes on the watchword and tablet before witnesses to the commander of the next maniple, who in turn passes it to the one next him" (McGing).
Password use in the military went on to include a counterpassword. During D-Day, U.S. paratroopers identified each other using a password, such as "flash", and combining it with a counterpassword, such as "thunder". The password and …show more content…
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