Rotatable Fingerprint Sensor Mounting for Usability
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Solution Overview
Problem
Integrated fingerprint sensors in electronic devices are often fixed and centrally located, making them inconvenient for users who prefer to hold or use devices in specific ways or with particular fingers, leading to reduced usability and accuracy.
Innovation Solution
The fingerprint sensor is mounted rotatably and pivotably within the device's enclosure, allowing users to adjust its position for comfort while being secured to prevent movement during normal use, using mechanisms like a cup-shaped plate and spring washer to ensure resistance against accidental repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fingerprint sensor is fixed at a centered location, then the device structure is simple and manufacturing is easy, but usability is reduced for users with specific preferences
Solution Approach 1:
The fingerprint sensor is mounted on a rotatable and pivotable mechanism that allows it to move from a fixed centered position to multiple adjustable positions. This dynamic mounting enables users to reposition the sensor according to their preferences while maintaining a relatively simple overall device structure.
2Ease of operation
If the fingerprint sensor is made movable for user adjustment, then usability is improved, but the sensor may move accidentally during normal operation
Solution Approach 1:
The mounting mechanism provides dynamic adjustability during installation or setup, then transitions to a stable locked state during normal operation. This allows the sensor to be positioned according to user preference while preventing accidental movement during fingerprint scanning.
Solution Approach 2:
The mounting mechanism includes feedback features that indicate when the sensor has been properly positioned and locked, providing user confirmation that the sensor is secure and will not move during operation. This feedback ensures both usability and reliability.
Data Source
AI summary
The usability of an electronic device that includes an integrated fingerprint sensor is enhanced by mounting the fingerprint sensor rotatably and pivotably. The fingerprint sensor is prevented from moving during normal use, but the fingerprint sensor may be repositioned to accommodate a user's preferences.