Hardware Security Switch for Personal Devices
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Solution Overview
Problem
Existing security solutions for personal devices are either externally tamperable or not fully isolated from the device itself, failing to provide simultaneous protection against unauthorized access and audio/video information capture, and cannot prevent false notifications about the device's security mode, especially when software security is compromised.
Innovation Solution
A hardware security switch that is internally isolated and operated only by the authorized user, disconnecting audio/video and communication components manually to prevent unauthorized access and information capture, with modes for protecting audio/video information and user location, and a visual indicator to prevent false notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software security systems (firewalls, anti-virus programs) are used to protect against unauthorized access, then security protection is provided, but the security can be overcome by new hacking methods and viruses, creating an endless competition that makes software security hard to implement and prove
Solution Approach 1:
The patent replaces software-based security systems with a hardware security switch that uses physical switching mechanisms. This mechanical/electrical system disconnects communication and sensor components from the device core, providing security that is independent of software vulnerabilities and cannot be overcome by hacking methods or viruses.
Solution Approach 2:
The security switch extracts the security function from the software layer and places it in a dedicated hardware component that is isolated from the device's software environment. This extraction ensures that the security mechanism cannot be compromised by software-based attacks.
2Reliability
If existing hardware security solutions (external switches) are used to isolate communication lines, then protection against unauthorized capture is provided, but the switch can be tampered with by external factors and is not fully isolated from the device
Solution Approach 1:
The security switch is nested within the device enclosure, integrating the security function into the device's physical structure. This internal placement with physical access requirements provides isolation from external tampering while maintaining the security function.
Solution Approach 2:
The security switch acts as an intermediary component between the device core and external communication/sensor systems. When activated, it physically disconnects these components, creating an isolation barrier that prevents external tampering and unauthorized access.
3Device complexity
If internal switches are used to control device components, then integration is improved, but the switches can be manipulated by device software and cannot provide full isolation
Solution Approach 1:
The device is segmented into isolated functional zones: the device core and the security switch are separated by physical isolation barriers. The security switch controls connections to communication and sensor components, creating distinct security domains that prevent software manipulation.
Solution Approach 2:
The security switch serves as an intermediary that physically isolates the device core from direct control of communication and sensor components. This intermediary position prevents device software from manipulating the switch while maintaining integration through controlled connection points.
4Reliability
If components are disconnected to prevent unauthorized access, then security is improved, but the device cannot provide secure mode exit or prevention of false notifications about security state
Solution Approach 1:
The security switch incorporates feedback mechanisms through visual indicators (such as LED lights) that show the current security state to the user. This feedback allows users to understand whether the device is in secure mode and enables proper mode exit operations.
Solution Approach 2:
The security switch provides self-service functionality through manual user activation and deactivation. The user directly controls the security state through physical interaction with the switch, ensuring intentional mode changes and eliminating false notifications about security status.
Data Source
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AI summary
A system and method for securing a personal device that includes a device core and a peripheral device from unauthorized access or operation. The system and method use a switch, included fully or partially within an envelope of the device and which cannot be affected in its operation by either the device core or the peripheral device. The switch may be activated by an authorized user of the personal device either preemptively or in response to a detected threat.