Sobriety Test Authentication Using Temporary Validation Codes
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Solution Overview
Problem
Existing sobriety test methods can be easily forged by replicating visual indications, allowing illegitimate test results to be presented as legitimate, as the test values and data are not uniquely linked to the subject undergoing the test.
Innovation Solution
A process and device that utilize a temporary validation code, generated randomly or derived from a timestamp, which is visually or acoustically represented and recorded simultaneously with the test result and subject's picture, creating an un-reproducible association that hardens forgery attempts, and is transmitted or stored for verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual indication of test result is used, then test result can be displayed to subject, but test can be easily forged by replicating the visual indication
Solution Approach 1:
The patent uses a camera to capture an image of the visual indication (the copied information) and stores it together with the test result. This creates a faithful reproduction of the indication that can be verified later, preventing forgery because the captured image serves as immutable proof of what was displayed at the time of testing.
Solution Approach 2:
The patent introduces a camera as an intermediary device between the visual indication and the verification process. Instead of directly trusting visual indications, the camera captures and stores them as objective evidence, acting as a mediator that bridges the gap between display and verification while preventing direct manipulation.
2Device complexity
If test result is recorded without unique linking to subject, then recording process is simple, but forgery is possible by using replica of earlier test indication
Solution Approach 1:
The patent merges multiple elements into a single authenticated record: the test result, the captured image of the visual indication, and the subject's identification data are combined and stored together. This creates a unified authentication package where all elements mutually verify each other, making forgery difficult while adding only moderate complexity to the recording process.
3Reliability
If temporary validation code is generated and represented, then forgery resistance increases, but device complexity and operation complexity increase
Solution Approach 1:
The temporary validation code is displayed as a visual indication that is captured by the camera. This copied visual representation serves as proof of the code's existence and value at the time of testing, providing strong forgery resistance while keeping the device relatively simple since the camera already exists for other purposes.
Solution Approach 2:
The validation code changes dynamically for each test (temporal parameter change), ensuring that each test has a unique authentication element. This dynamic parameter change provides strong forgery resistance while the implementation remains simple because it only requires generating and displaying different codes at different times, which is a basic computational function.
Data Source
AI summary
Process and device to authenticate a subject undergoing a sobriety test, by testing the blood alcohol content (BAC) of the subject, emitting an indication of the confirmed test, and recording said indication together with a picture of said subject, wherein said indication comprises a representation of a temporary validation code.