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Patent Title: Computer system security device

Assignee: IBM
Patent Number: US5265163
Issue Date: 11-23-1993
Application Number:
File Date:04-30-1990

Abstract: A computer system having a power-on password stored in non-volatile memory wherein entry of the power-on password by a system manager permits access to all of the computer functions. The system also has the facility of at least one additional password held in non-volatile memory, wherein entry of the additional password by a user permits the system to boot in a manner preselected by the system manager. Preferably there are available a plurality of additional passwords providing at least two different levels of security access to the system.


Link to USPTO

IBM Pledge dated 1/11/2005