Digital Chain of Custody System Using Barcode Offline Sync
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Solution Overview
Problem
The construction industry faces challenges in maintaining chain of custody for construction materials due to the fragility and readability issues of paper records, especially in harsh environments and areas with poor or non-existent wireless connectivity, necessitating a resilient electronic system for tracking load tickets and updating their status.
Innovation Solution
A digital chain of custody system comprising an electronic database, server, and communication devices that store and transmit electronic load tickets via a wireless network, using barcodes and digital cameras to encode and decode data, ensuring custody transfer updates even without continuous connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If paper records are used to maintain chain of custody, then the system is simple and easy to implement, but the records are fragile and subject to damage in harsh environments
Solution Approach 1:
The patent replaces fragile paper records with electronic copies stored in digital databases. The load ticket information is captured electronically and stored as digital records that can be replicated and distributed without degradation, eliminating the fragility of paper while maintaining the simplicity of record-keeping through standardized digital formats.
Solution Approach 2:
The patent substitutes the mechanical paper-based recording system with an electronic digital system. Instead of physically writing and handling paper documents, the system uses electronic databases, digital storage, and computerized access methods, thereby eliminating paper damage issues while maintaining ease of access and implementation.
2Productivity
If paper records with water-soluble ink are used, then the writing process is simple and fast, but the text becomes difficult or impossible to read when exposed to rain water
Solution Approach 1:
The patent eliminates the need for physical writing by using electronic data capture and digital storage. Information is entered once into an electronic database and can be replicated indefinitely without loss of quality or readability, removing the vulnerability of water-soluble ink while maintaining fast information recording through electronic input methods.
3Reliability
If an electronic system with wireless devices is implemented, then the chain of custody can be tracked digitally, but the system fails in areas with poor or non-existent wireless connectivity
Solution Approach 1:
The patent implements offline capability where load tickets and chain of custody data are captured and stored locally in the database before wireless connectivity is needed. The system performs data entry and storage in advance, allowing operations to continue without real-time network connection, and only requires connectivity when data needs to be transmitted or synchronized.
4Loss of time
If electronic load tickets are transmitted via wireless network, then real-time custody updates are achieved, but the system requires continuous connectivity which is not always available
Solution Approach 1:
The patent stores load ticket data and custody information in the electronic database in advance, before wireless transmission is needed. This preliminary storage allows the system to operate without continuous connectivity, retrieving and transmitting data only when network availability permits, thereby reducing the criticality of real-time connection while maintaining efficient custody tracking.
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
The system effectively maintains electronic load tickets and updates custody status across construction material hauls, ensuring reliability and accuracy despite harsh environments and connectivity issues, enhancing the construction material tracking process.
Implementation Method 1
display, on the display screen, a barcode that encodes one of the plurality of first electronic load tickets stored in the memory
Implementation Method 2
The second communication device includes a processor and a digital camera. The second communication device is configured to capture an image of a barcode with the digital camera
Data Source
AI summary
A digital chain of custody system resilient to wireless connectivity disruption includes an electronic database that stores electronic load tickets, a server, and one or more user communication devices wirelessly coupled to the server, examples of which include a sender communication device, a trucker communication device, and a receiver communication device. Ones of the user communication devices display barcodes that encode contents of respective electronic load tickets, and other ones of the user communication devices image the barcodes and decode the barcodes into digital representations of the electronic load tickets, thereby enabling communication of the electronic load tickets, despite lack of wireless connectivity.