Fingerprint Scanner Duress Detection for Coercion-Resistant Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fingerprint authentication systems are vulnerable to coercion, allowing nefarious entities to gain access by forcing users to provide their fingerprints.
Innovation Solution
A security feature that detects indicators of duress during fingerprint scanning, such as excessive pressure, unusual movement patterns, or matching a duress fingerprint, to control access or functionality, including powering down the device, locking it, or requiring additional authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fingerprint authentication is implemented for device access, then ease of operation is improved, but security against coercion is worsened
Solution Approach 1:
The system performs preliminary analysis of fingerprint scanning characteristics before granting authentication. By examining pressure patterns, movement speed, and contact duration in advance, the system can detect signs of coercion before making the authentication decision, thus preventing unauthorized access while maintaining ease of use for legitimate users
Solution Approach 2:
The system incorporates feedback mechanisms by analyzing multiple parameters (pressure, movement pattern, contact time) during the fingerprint scanning process. This feedback loop allows the system to adjust its authentication decision based on real-time detection of duress indicators, resolving the contradiction between ease of operation and security against coercion
2Reliability
If pressure detection is added to detect duress, then security against coercion is improved, but device complexity is worsened
Solution Approach 1:
The fingerprint sensor is designed to perform multiple functions: traditional fingerprint recognition and duress detection through pressure sensing. By making the sensor multi-functional, the system improves security against coercion without adding separate hardware components, thus avoiding increased device complexity
Solution Approach 2:
The existing fingerprint sensor infrastructure is utilized to detect duress conditions through pressure analysis. The system leverages the sensor's inherent capabilities rather than requiring additional dedicated pressure sensors, allowing the device to serve itself for dual purposes and avoiding complexity increases
3Reliability
If multiple authentication indicators are monitored, then security against coercion is improved, but difficulty of detecting and measuring is worsened
Solution Approach 1:
The system merges multiple detection functions (pressure sensing, movement pattern recognition, contact time measurement) into a unified authentication analysis process. By combining these indicators into a single comprehensive evaluation, the system improves security against coercion while managing the detection complexity through integration rather than separate analysis streams
Data Source
AI summary
A security feature within an apparatus that includes a fingerprint scanner used for purposes of authentication. Specifically, a first indicator is detected that is a user input to a fingerprint scanner and indicates the occurrence of a duress-inducing event. In response to detecting the first indicator, (i) access to the apparatus is controlled, and (ii) access to functionality provided by the apparatus is controlled. As such, if the user is being forced to input their fingerprint by a nefarious entity desiring access to the apparatus, the present invention provides a means by which the user can covertly activate certain features on the apparatus that prevent the nefarious entity from access to the apparatus and/or functionality provided by the apparatus.