POS Terminal Encryption for Secure Digital Receipts
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Solution Overview
Problem
Paper receipts pose environmental, economic burdens on retailers and banks, and digital receipts raise concerns about consumer privacy and potential legal issues due to tracking capabilities.
Innovation Solution
Implementing a system where transaction data is encrypted at the point-of-sale terminal, allowing customers to securely store and access encrypted digital receipts through a network, ensuring privacy and enabling access delegation to third parties like tax preparers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If digital receipts are implemented to eliminate paper receipts, then environmental burden and replenishment costs are reduced, but consumer privacy concerns and potential legal issues arise due to tracking capabilities
Solution Approach 1:
The patent introduces encryption technology as an intermediary between the digital receipt system and consumer privacy. By encrypting transaction data in the digital receipt, the system mediates the conflict between providing digital tracking capabilities and protecting consumer privacy. The encryption acts as a barrier that prevents unauthorized access while allowing authorized retrieval, thus resolving the privacy concern without eliminating the digital receipt benefits.
Solution Approach 2:
The patent changes the parameter of data accessibility by applying encryption transformations to the digital receipt data. The transaction data is transformed from an accessible state to an encrypted state, and can only be reverted to accessible form with proper authorization. This parameter change resolves the contradiction by making the data protected by default while maintaining accessibility for legitimate purposes.
2Object-affected harmful factors
If transaction data is encrypted to protect consumer privacy, then privacy concerns are addressed, but access and retrieval complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the consumer's mobile device automatically retrieves and displays the encrypted digital receipt without requiring manual decryption operations. The system handles the complexity of encryption and decryption in the background, while the consumer simply interacts with a familiar mobile interface. This transfers the complexity management from the consumer to the system, resolving the contradiction between privacy protection and ease of access.
3Loss of substance
If paper receipts are replaced with digital receipts, then replenishment costs and environmental impact are reduced, but access control and security requirements increase
Solution Approach 1:
The patent applies different security qualities to different parts of the digital receipt system. The transaction data itself is encrypted with high security, while the receipt display interface remains simple and user-friendly. The encryption keys and decryption logic are localized to the consumer's mobile device, providing strong security where needed while maintaining ease of use where appropriate. This local quality differentiation resolves the contradiction between security requirements and system simplicity.
Data Source
AI summary
Various embodiments herein relate data privacy, in particular systems and method of encrypting transaction data. One example method includes receiving, within processing of a transaction, an encryption data element from customer at a point-of-sale (POS) terminal and encrypting a digital receipt of the transaction with the encryption data element. This method then proceeds by storing the encrypted digital receipt to a network storage location from which the electronic receipt image is accessible, directly or indirectly, for later retrieval by the customer.