Mobile Payment Terminal Pairing via Bluetooth and Accelerometer Checks
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Solution Overview
Problem
Existing financial payment transactions using smart mobile devices (SMDs) lack user-friendliness, stability, and security, particularly in establishing secure connections with payment terminals.
Innovation Solution
A method involving a secure IP-connection initiated by a Bluetooth signal exceeding a defined strength level, followed by monitoring Bluetooth signal strength changes and accelerometer signals to activate a payment transaction mode, enabling secure data exchange and transaction approval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure IP-connection is established based on Bluetooth signal strength exceeding a first minimal level, then the payment transaction can be initiated, but the connection may be unstable and susceptible to unauthorized access
Solution Approach 1:
The system performs preliminary actions by first establishing a secure IP-connection based on Bluetooth signal strength exceeding a first minimal level, then monitoring signal strength changes before enabling payment transaction mode. This staged approach ensures the connection is stable and verified before allowing transactions, resolving the contradiction between connection reliability and operational simplicity.
Solution Approach 2:
The system continuously monitors Bluetooth signal strength changes and accelerometer signals as feedback mechanisms. When the signal strength exceeds a second minimal level (higher than the first) and accelerometer patterns confirm legitimate presence, the system activates payment transaction mode. This feedback loop ensures connection stability while maintaining user-friendly operation.
2Reliability
If Bluetooth signal strength monitoring and accelerometer signal monitoring are activated to enhance security, then transaction security is improved, but the system complexity and processing requirements increase
Solution Approach 1:
The system activates accelerometer signal monitoring only after the Bluetooth signal strength has already exceeded the second minimal level, which is higher than the first minimal level required for basic connection. This preliminary verification ensures that accelerometer monitoring is only engaged when a stable, strong connection is already established, reducing unnecessary processing complexity while maintaining high security standards.
Solution Approach 2:
The system uses Bluetooth signal strength as an intermediary indicator before activating more complex accelerometer monitoring. The Bluetooth signal acts as a first layer of verification, and only when it confirms a strong, stable connection does the system engage the accelerometer as a second layer of security verification. This intermediary approach balances security enhancement with system complexity management.
3Reliability
If the second minimal Bluetooth signal strength level is set higher than the first minimal level, then connection stability is improved, but the range for initiating transactions is reduced
Solution Approach 1:
The system segments the Bluetooth signal strength requirements into two distinct levels: a first minimal level for establishing the secure IP-connection and enabling transaction initiation, and a second higher minimal level for activating accelerometer monitoring and confirming payment transaction mode. This segmentation allows the system to maintain a wider communication range for connection establishment while ensuring high stability for actual transactions.
Solution Approach 2:
The system dynamically adjusts the stringency of verification based on the transaction stage. At the connection establishment stage, it accepts the first minimal signal level to maintain broader compatibility and range. At the transaction execution stage, it requires the higher second minimal level plus accelerometer verification, dynamically adapting security requirements to the operational context and resolving the range-stability contradiction.
Data Source
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Figure 3
AI summary
The invention relates to a method for enabling a financial payment transaction between a smart mobile device (SMD) including an accelerometer and a payment terminal, comprising the method steps: A) realizing a secure IP-connection for data exchange, B) monitoring the changes in the SMD Bluetooth signal strength; C) activating the monitoring by the payment terminal of accelerometer signals; D) activating a payment transaction mode; and E) effecting a financial payment transaction.