Sensor-Based Computer Locking via User Presence Detection
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Solution Overview
Problem
Current computer security systems fail to adequately prevent unauthorized access when a user walks away without implementing a screen lock.
Innovation Solution
A computer locking system utilizing a sensor, such as a radar sensor, to detect user presence and transmit a keystroke code to initiate a screen lock when the user is absent, leveraging existing operating system keyboard drivers to ensure security without additional software installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor-based automatic locking system is implemented, then computer security is improved, but device complexity increases
Solution Approach 1:
The sensor, controller, and keystroke code transmission functions are merged into an integrated system that leverages existing keyboard infrastructure. The controller is integrated into the keyboard which is coupled to the computer, combining multiple functions into a unified device that reduces overall system complexity while maintaining security improvements.
Solution Approach 2:
The system uses a universal approach by transmitting keystroke codes that are interpreted by the computer's existing operating system without requiring additional software installation. The sensor-based presence detection and the keystroke code transmission work together to provide a multi-functional security solution that operates within existing system frameworks.
2Reliability
If additional security software is installed to prevent unauthorized access, then computer security is improved, but ease of operation deteriorates
Solution Approach 1:
The system utilizes the computer's existing operating system and keyboard driver infrastructure to interpret and process the transmitted keystroke codes. The computer itself performs the security function by recognizing the keystroke code as a screen lock command, eliminating the need for external security software installation and maintaining ease of operation.
3Reliability
If the sensor monitors user presence continuously, then security response time is improved, but energy consumption increases
Solution Approach 1:
The controller monitors user presence by periodically checking sensor signals rather than continuously processing data. The system determines user absence based on sensor signals indicating no presence within a predefined distance, implementing periodic monitoring that reduces energy consumption while maintaining effective security response through event-driven lock activation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively locks the computer screen when the user is not present, ensuring data confidentiality by preventing unauthorized access through a mechanism that integrates seamlessly with existing systems.
Implementation Method 1
the sensor is a radar sensor
Data Source
AI summary
Computer locking systems, methods and devices are disclosed. A controller (102) is configured to monitor, based on signals from a sensor (104), presence of a user in front of the sensor (104). In addition, the controller (102) determines, based on the signals from the sensor (104), that a user is not present in front of the sensor (104) and, in response to determining that the user is not present in front of the sensor (104) based on the sensor signals, transmits a keystroke code to a computer (106). Here, the keystroke code is configured to cause the computer (106) to implement a computer lock.