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Serves for authen­ti­ca­tion. This means agreeing on and using a char­acter string for someone, usu­ally a person, to iden­tify them­selves and con­firming their own iden­tity this way.

A good pass­word should have at least 12 char­ac­ters and con­sist of num­bers, upper and lower case let­ters as well as spe­cial characters.