Scale QR Code Encoding for Bulk Item Pricing
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Solution Overview
Problem
Barcodes are inadequate for encoding bulk items with variable weights, as they cannot accurately represent the weight of items purchased in different quantities, making it difficult for shoppers to determine the price of loose or bulk goods during checkout.
Innovation Solution
A system comprising a scale and a display that encodes the weight of items in machine-readable formats like QR codes or UPC codes, allowing mobile devices to scan and decode the weight information for accurate pricing, enabling shoppers to weigh items and generate codes that can be scanned for self-service checkout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If barcodes are used for manufactured goods, then item identification is simple and efficient, but they cannot encode variable weight information for bulk items
Solution Approach 1:
The solution separates item identification (via barcode/QR code) from weight measurement (via scale). The barcode identifies the item type while the scale measures the actual weight, and these two data streams are combined to calculate pricing. This segmentation allows the system to handle both packaged goods with fixed barcodes and bulk items with variable weights.
Solution Approach 2:
A mobile device application serves as an intermediary between the scale and the pricing system. The app captures the barcode information, receives weight data from the scale, and processes the combined information to determine pricing. This intermediary enables flexible handling of both packaged and bulk items through a unified interface.
2Ease of operation
If traditional barcodes are used, then item identification works for packaged goods, but they fail to provide accurate pricing for bulk items purchased in different quantities
Solution Approach 1:
The system creates a universal solution that handles both packaged goods (with barcodes) and bulk items (weighed on scale) through the same mobile device interface. The mobile app can process barcode scans, receive weight data from connected scales, and calculate prices for both item types using a unified workflow, enabling self-service checkout for diverse product categories.
Solution Approach 2:
The solution adds a weight dimension to the traditional barcode system. Instead of relying solely on fixed barcode information, the system incorporates real-time weight measurements from scales, creating a multi-dimensional data model that combines item identification (barcode) with quantity information (weight) for accurate pricing of bulk items.
3Reliability
If multiple code formats are encoded concurrently, then error correction is improved, but device complexity increases
Solution Approach 1:
The system encodes multiple code formats (barcode, QR code) simultaneously on the same label, providing redundant information. This excessive encoding ensures that if one code type fails to scan properly, another format can be used instead, improving reliability at the cost of some additional complexity in the labeling process.
Data Source
AI summary
This invention relates to a system including a scale that weighs an item placed on the scale and encodes the weight and/or other item information into a machine readable code. The system may include a display that is coupled to the scale and displays the machine readable code. The scale may encode the item in Quick Response (QR) code format, Universal Product Code (UPC) format, and/or other computer-readable format. A mobile device may take a picture of or otherwise scan the machine readable code to determine the weight and/or other information encoded therein. The system may include a wireless transmitter that wirelessly transmits the weight. The mobile device may include a wireless receiver that wirelessly receives the weight transmitted from the scale. The mobile device may execute a self-scan application that uses the de-encoded or otherwise obtained weight for pricing the item based on the weight or other purposes.