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Detailed explanation-1: -Fernando J. Corbató, a scientist who fostered the digital revolution by developing shared computer operating systems and also put his stamp on daily life by introducing the computer password, died July 12 at a nursing home in Newburyport, Mass. He was 93.

Detailed explanation-2: -Fernando J. Corbató was an American pioneer in the field of computer science who is best known as being the father of the password. Corbató was a physicist whose interests evolved into what would become a burgeoning field in its own right, computer science.

Detailed explanation-3: -In 1961, MIT computer science professor Fernando Corbato created the first digital password as a project problem-solver. When he built a giant time-sharing computer, several users needed their own private access to the terminals. His solution? Give each user their own password.