POS Payment Terminal Acknowledgement Process
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Solution Overview
Problem
Conventional computing systems lack a process to ensure that payment terminal devices connected to POS devices remain online and usable for data processing, leading to disconnects in data transmissions and loss of messages.
Innovation Solution
An acknowledgement process is implemented where backend servers initiate a request for an acknowledgement from payment terminal devices using a previous connection ID, monitoring for responses to determine the terminal's online status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal devices are connected to POS devices for data processing, then data exchange capability is improved, but message transmission reliability deteriorates due to potential disconnects and loss of messages
Solution Approach 1:
The patent implements an acknowledgement mechanism where terminal devices send feedback signals to POS devices to confirm receipt and processing status of messages. This feedback loop ensures that the POS device knows whether the terminal device is online and has received messages, thereby maintaining message transmission reliability while preserving data exchange capability.
Solution Approach 2:
The patent performs preliminary status detection by sending acknowledgement requests to terminal devices before initiating critical data processing transactions. This preliminary action verifies terminal availability and connectivity in advance, preventing message loss and disconnects during subsequent data exchange operations.
2Reliability
If real-time status detection of terminal devices is implemented, then message transmission reliability is improved, but system complexity increases
Solution Approach 1:
The terminal devices perform self-status indication by automatically sending acknowledgement signals when they are online and ready to receive messages. This self-service mechanism eliminates the need for complex external monitoring systems, as the terminal devices themselves provide the status information needed for reliable message transmission.
Solution Approach 2:
The acknowledgement mechanism provides simple feedback signals from terminal devices to POS devices about their online status and message receipt. This straightforward feedback approach improves reliability without requiring complex status detection systems, as the feedback is generated directly by the terminal devices themselves.
3Reliability
If acknowledgement requests are sent to terminal devices, then terminal availability detection is improved, but processing time increases
Solution Approach 1:
The system sends acknowledgement requests as a preliminary action before initiating critical data processing transactions. By verifying terminal availability in advance, the system ensures that subsequent processing operations can proceed without delays caused by terminal unavailability, thus managing processing time effectively while improving reliability.
Solution Approach 2:
The acknowledgement mechanism operates periodically, with the system sending status detection requests at appropriate intervals. This periodic action balances the need for terminal availability detection with processing time constraints, as the system checks status at key decision points rather than continuously, optimizing the trade-off between reliability and time.
Data Source
AI summary
There are provided systems and methods for an acknowledgement process for message transmissions to connectable processing terminals for point-of-sale (POS) devices. A user may engage in a transaction with a merchant at a POS device, such as a purchase of items from a merchant at a physical merchant location and using payment terminals with the POS device. An online transaction processor may provide an acknowledgement process to determine if the payment terminal is online and receiving communications so that the user may view transaction details and complete transaction processing. This may be done through lookup of a previous connection of the payment terminal over a cloud computing system with the transaction processor and transmission of a request for acknowledgement over that connection. If the payment terminal responds with an acknowledgement, the transaction processor may then notify the POS device that data processing may proceed.