Touchless Gesture Password via Ambient Light Sensors
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Solution Overview
Problem
Conventional methods for unlocking devices, such as password input via keyboards or touch-screens, can be impractical in environments where users have dirty hands or must maintain gloved hands, like operating rooms or oil rigs, as they require physical interaction.
Innovation Solution
A system utilizing ambient light sensors to detect touch-less gestures, allowing users to input passwords through movements that alter ambient light intensity, enabling gesture recognition without direct contact with the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If password input is done via keyboard or touch-screen entries, then password entry functionality is achieved, but it becomes impractical in environments where users have dirty hands or must maintain gloved hands
Solution Approach 1:
The patent replaces the mechanical touch-based input system (keyboard or touch-screen) with an optical detection system using ambient light sensors. The system detects gestures by measuring changes in ambient light intensity caused by hand movements, eliminating the need for physical contact with the device while maintaining password entry functionality.
Solution Approach 2:
The patent introduces ambient light as an intermediary medium between the user and the device. Instead of direct hand-device contact, the user's hand movements modulate the ambient light reaching the sensors, which then translates these optical variations into gesture recognition and password verification.
2Reliability
If physical interaction with the device is required for password entry, then authentication is achieved, but users are exposed to contamination or must remove protective gear
Solution Approach 1:
The patent substitutes the mechanical contact-based authentication process with an optical sensing process. Ambient light sensors detect hand gestures without requiring the user to touch the device, thereby maintaining secure authentication while eliminating exposure to contamination in environments like operating rooms.
3Ease of operation
If touch-less gesture detection is implemented, then password entry is enabled without physical contact, but the system requires detection of subtle light intensity changes
Solution Approach 1:
The patent employs ambient light sensors that serve multiple functions: they detect both the presence and movement characteristics of hands through subtle light intensity variations. By utilizing the same sensor type for multiple detection purposes, the system achieves contactless operation while managing measurement precision requirements.
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
Enables secure and practical password entry in environments where physical interaction is not feasible, ensuring device functionality can be restored without exposing users to contamination or removing protective gear.
Implementation Method 1
A system utilizing ambient light sensors to detect touch-less gestures, allowing users to input passwords through movements that alter ambient light intensity
Data Source
AI summary
A device and method to use a password by touch-less gesture are described. The device includes two or more ambient light sensors arranged at respective surface locations of the device, each of the two or more ambient light sensors measuring light intensity at the respective surface location. The device also includes a first processor to execute a password application on the device, and a second processor to detect two or more gestures performed by an object in touch-less communication with the device and define or verify a password based on the two or more gestures.