System and method for inhibiting access to a computer

摘要

A computer security system which prevents an unauthorized user from accessing the computer system when an authorized user has already logged onto the computer system and has temporarily left the workstation. The computer security system generally includes a sensor which is configured to detect the presence of a person in the region around a workstation and a processing unit which logs out of the computer when a person is no longer present in the region. An optional calibration tool may be provided to set the sensitivity of the sensor and prevent accidental logging out when the authorized user is still present in the region around the workstation.

主权项

1. A method for ensuring that only an authorized user remains logged into a computer system, comprising:
a. providing a central processing unit; b. providing a memory connected to said central processing unit; c. providing a digital camera capable of identifying unique characteristics of said authorized user, said digital camera being connected to said central processing unit; d. establishing a set of unique identifying characteristics of said authorized user and storing said unique identifying characteristics in said memory, along with a reference to the authorized user to which they pertain; e. said unique identifying characteristics being identifiable from an output of said digital camera alone; f. after said authorized user logs into said computer system, using said central processing unit to compare information from said digital camera against said unique identifying characteristics in said memory corresponding to said authorized user; g. upon failing to detect a match between said information from said digital camera and said set of unique identifying characteristics in said memory for a defined interval, sending a signal to a security administrator, along with said information from said digital camera; h. presenting said information from said digital camera to said security administrator; i. allowing said security administrator to declare said detected mismatch a system error and prevent the logging off of said authorized user; and j. upon failing to detect said match for said defined interval and failing to receive said declaration of system error from said security administrator, logging off said authorized user.