Biometric Caching for Network Traffic Reduction
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Solution Overview
Problem
Biometric identification systems experience unnecessary network traffic and system load due to repeated communications for passively obtained biometrics, leading to impaired system performance and resource inefficiency.
Innovation Solution
Implementing a biometric caching system where an identification station stores digital representations of biometrics in a local cache for a time window, allowing it to omit communication with the identification system device if the biometric matches cached data, thereby reducing network traffic and system load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biometric identification systems communicate with the identification system device for every biometric capture, then identification accuracy is maintained, but network traffic and system load increase significantly
Solution Approach 1:
The system performs preliminary actions by capturing and storing biometric data locally before needing to communicate with the identification system device. The local cache stores biometric templates and identification results in advance, allowing the system to quickly check against cached data before initiating network communication, thereby reducing unnecessary network traffic while maintaining identification accuracy.
Solution Approach 2:
The patent implements local quality by creating a local cache on the identification station that stores biometric data and identification results specific to that location. This local storage allows the system to handle identification requests using locally available data, reducing the need for continuous network communication while maintaining accurate identification through local pattern matching against cached biometric templates.
2Loss of energy
If the system caches biometric data locally, then network traffic is reduced, but system complexity increases
Solution Approach 1:
The system segments the biometric identification process into distinct components: biometric data capture, local cache storage, local pattern matching, and network communication only when necessary. This segmentation allows each component to operate independently and efficiently, reducing overall system complexity while maintaining the benefits of local caching for reducing network traffic.
Solution Approach 2:
The patent uses copying by creating local copies of biometric templates and identification results in the local cache. Instead of managing complex real-time synchronization and data integrity protocols, the system simply maintains local copies that can be quickly accessed and compared, significantly reducing system complexity while effectively reducing network traffic through local pattern matching.
3Speed
If biometric data is stored in local cache for extended periods, then response time is improved, but data freshness may be compromised
Solution Approach 1:
The system implements periodic action by establishing time windows during which cached biometric data remains valid. The local cache stores identification results and biometric templates with associated time window information, and the system periodically updates or invalidates cached data based on these time windows, ensuring data freshness while maintaining fast response times through local pattern matching within the valid time window.
Data Source
AI summary
An identification station is operable to obtain digital representations of biometrics for people and communicate these digital representations of biometrics over one or more networks to an identification system device in order to identify the people for a variety of different purposes. The identification station also stores data related to previous biometric identifications in a local cache for one or more time windows. Upon obtaining a digital representation of a biometric, the identification station may first check if the digital representation of the biometric corresponds to data in the local cache. If so, the identification station may omit communicating with the identification system device. Otherwise, the identification station may communicate with the identification system device to identify the person, as well as store the digital representation of the biometric in the local cache for the one or more time windows.