Remote POS Terminal with Dynamic Transaction Mode Switching
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Solution Overview
Problem
Point of Sale (POS) systems face challenges in handling intermittent network connectivity, especially in remote locations, which affects the reliability of payment processing and transaction verification, particularly with the emergence of advanced payment methods like EMV chip cards.
Innovation Solution
A dedicated mobile computing device equipped with a payment processing application, connected via unreliable intermittent networks, uses a transaction server to facilitate real-time and batched transactions, with an automatic transaction module switching between modes based on network availability, and a local backup server to maintain data integrity and prevent fraud.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If real-time transaction processing is implemented, then payment verification speed is improved, but network connectivity requirements increase
Solution Approach 1:
The POS terminal dynamically switches between real-time and batch transaction modes based on network availability. When network connectivity is available, the system operates in real-time mode for immediate payment verification. When network connectivity is lost, the system automatically transitions to batch mode, storing transactions locally and processing them in batches when connectivity is restored, thus adapting to changing network conditions while maintaining operational continuity.
Solution Approach 2:
The system performs preliminary actions by storing transaction data locally in the batch transaction database before network connectivity is lost or as a precautionary measure. This allows the terminal to accumulate transactions in ready-to-process format, enabling quick batch processing when network connectivity is restored without requiring real-time network availability for each transaction.
2Reliability
If batched transaction mode is used, then network connectivity requirements are reduced, but transaction processing time increases
Solution Approach 1:
The system dynamically adjusts its operational mode based on network conditions. Rather than permanently operating in batch mode, the terminal switches to real-time mode when network connectivity is restored, thereby reducing the time penalty associated with batch processing. This dynamic adaptation allows the system to minimize transaction processing delays while maintaining reliability in remote locations with intermittent connectivity.
Solution Approach 2:
The batch processing mechanism ensures continuity of useful action by continuously accumulating transactions in the local database and automatically processing them in batches when connectivity is restored. This eliminates idle time and ensures that the payment processing function remains continuously available, reducing overall transaction processing time across the full operational cycle.
3Reliability
If local backup server is implemented, then data integrity is improved, but device complexity increases
Solution Approach 1:
The system creates a local copy (batch transaction database) of transaction data on the POS terminal itself, eliminating the need for a separate physical backup server. This copying approach maintains data integrity by storing redundant transaction information locally, allowing the terminal to continue operating and processing transactions even when disconnected from the central server, while avoiding the complexity of implementing a dedicated backup server infrastructure.
Data Source
AI summary
Disclosed are various embodiments for improvements in point of sale terminals and payment processing at remote event spaces. The system and apparatuses disclosed herein facilitate the transaction processing of credit cards and other payment vehicles in often remote locations where network connections may be intermittent and suffer from frequent disconnects or interruptions of service. The embodiments disclosed are hardened against the elements that occur in remote environments along with adaptations to improve functionality accordingly. The system and apparatuses are further equipped to facilitate the event environment and are adapted to execute instructions to facilitate the financial transactions.