What is the meaning of Password? Concept, Definition of Password

Definition of Password

1 Meaning of Password

A password or key (in English password) is a form of authentication that uses secret information to control access to some resource. Password should be kept secret from those who are not allowed access. Asks those who want access to information a key; If they know or do not know the password, it grants or refuses access to information as the case may be.
The use of passwords goes back to antiquity: the sentinels guarding a position requesting the 'Holy and sena' that would like to spend. Only allow access to that person who knows the password. In the technological age, passwords are commonly used to control access to protected computers, cell phones, decoders TV cable operating systems, automatic teller machines, cash, etc. A typical computer can make use of passwords for different purposes, including connections to user accounts, accessing e-mail servers, accessing databases, networks, and web pages, and even to read news in newspapers (daily) electronic.
In the English language are two distinctive names for passwords: password (access Word) and pass code (access code), where the first does not necessarily mean using an existing Word (However, is normal to use a word family or easy to store the user), the first tends to be also associated the use of alphanumeric codes (also called PIT - Personal Identification Text)While the second is often linked to the use of a numeric code (also called PIN - Personal Identification Number). This also occurs in the Spanish-speaking, since key and password are sometimes used interchangeably.

2. Definition of Password

The Real Academia Española (RAE) does not include the word password in the dictionary. The term, however, is very popular in our language, although it may be replaced by password or key, notions that Yes are accepted by the SAR.
A password is a combination of letters and/or numbers that provides, who knows it, the possibility of accessing a resource. The password serves as protection and a safety mechanism: those who do not know the password, can not access the resource in question.
Suppose a man want to withdraw money from an ATM or ATM. To do this, you must enter a card to the machine and mention your password. Only if the password that you enter is correct (i.e., if it matches the password that is registered in the system), you can withdraw the money. Anyone who does not know the password will be able to gain access to the bank account of this man and thus extract money, unless he commits a crime and violate security.
Passwords also protect accounts of electronic mail (email) and other services on the Internet (such as Facebook, Twitter, etc.). User, to register, choose a password that only you must know it. This way, no one can use your mail or your profile on social networks to its name.
The use of passwords is very old, although its characteristics changed over time. Earlier, guards controlling access to a site only allowed to pass to those who knew a keyword. Currently, a password can be a combination of letters and numbers that is encrypted in the systems to be not affected.