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Security access and monitoring system for personal computer

  • US 5,377,269 A
  • Filed: 10/29/1992
  • Issued: 12/27/1994
  • Est. Priority Date: 10/29/1992
  • Status: Expired due to Fees
First Claim
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1. A method for controlling user access to a computer having a processor, a system timer, a system memory, and at least one input/output (I/O) device connected to said processor, said processor being directed by interrupts for execution of interrupt services and said computer further including a key device connectable to said processor for removably coupling data to said processor indicating a user identification, said method comprising the steps of:

  • storing in said system memory a data file of at least one authorized user identification;

    capturing a system timer interrupt;

    connecting said key device to said processor;

    responsive to said system timer interrupt, periodically reading said user identification from said key device and comparing said read user identification with said stored authorized user identification; and

    disabling said at least one I/O device when said read user identification fails to match said stored authorized user identification.

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