Self-Checkout System Anti-Theft Verification Using Weight and Barcode
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Solution Overview
Problem
Current self-checkout systems are vulnerable to improper operations where customers incorrectly input expensive items as cheaper items, especially when no barcode is involved, leading to potential losses for retailers.
Innovation Solution
A checkout system that includes a second article specification section, recognition section, and determination section to differentiate between a first article (with data) and a second article (without data), using tag readers, weight measurement, and size/shape detection to verify the presented item, and issues an alarm if the items do not match the specified type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a self-checkout system allows customers to manually input articles without barcodes, then the ease of operation is improved, but the reliability deteriorates due to improper operations such as falsifying expensive articles as low-price articles
Solution Approach 1:
The system continuously monitors the article conveyance process using multiple article measurement sections (upstream, middle, downstream) and provides feedback by comparing weight measurements at different positions. When a discrepancy is detected between the input article and the conveyed article, the system alerts the customer and prevents improper checkout operations.
Solution Approach 2:
The patent introduces an intermediary verification mechanism using article measurement sections and control sections that act as mediators between the customer's input and the final checkout. The system uses weight measurement as an intermediary parameter to verify article identity without requiring direct customer intervention in the verification process.
2Reliability
If weight measurement is used to verify articles, then the reliability is improved, but the device complexity increases due to additional measurement sections
Solution Approach 1:
The article measurement sections serve multiple functions: they measure article weight for verification purposes, monitor the conveyance process, and provide data for control decisions. This multi-functionality reduces the need for separate dedicated verification devices, thereby limiting the increase in device complexity.
Solution Approach 2:
The system uses the article's own weight as a self-identifying characteristic for verification. The article measurement sections automatically measure and compare weights without requiring additional complex verification equipment or manual inspection, allowing the article itself to participate in the verification process.
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
Effectively prevents improper operations by accurately identifying items and reducing errors in self-checkout processes, enhancing the reliability and security of the system.
Implementation Method 1
The barcode scanner 12 irradiates an article with a laser scanning beam to thereby read out a barcode attached to the article
Implementation Method 2
The article measurement section 21 measures the weight of articles placed on the article temporary-placing table 22
Implementation Method 3
The article bag measurement section 4 measures the weight of an article bag containing articles at the article bag station 3
Data Source
AI summary
A checkout system performs checkout of articles. The checkout system includes an LCD touch screen 11 for specifying a second article different from a first article having data on the article registered as first article data, a barcode scanner 12 for recognizing a presented article which is the first article presented, and a control unit 314 that determines whether the presented article specified as the second article by the LCD touch screen 11 is not the second article.