Proximity Verification for Temporary Transfer Limit Override
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Solution Overview
Problem
Digital transaction systems impose transfer limits due to limited identity verification, hindering legitimate transactions that require higher values and increasing fraud risk.
Innovation Solution
A system that monitors device proximity using electronic transaction services, authenticates user identities, and allows users to override daily transaction limits through actions like NFC taps or QR code scanning when devices are within a threshold distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transfer limits are imposed to prevent fraud, then security is improved, but transaction flexibility deteriorates
Solution Approach 1:
The system dynamically adjusts transfer limits based on real-time proximity verification. When devices are detected within threshold distance via GPS, Bluetooth, or NFC, the system temporarily overrides standard limits allowing higher value transactions. This dynamic adaptation resolves the contradiction by making security constraints flexible rather than fixed.
Solution Approach 2:
The system changes the key parameter of transfer limit thresholds based on proximity conditions. Standard limits apply when devices are distant, but when proximity verification succeeds, the limit parameter is temporarily increased. This parameter change enables the system to accommodate both security requirements and legitimate high-value transactions.
2Device complexity
If identity verification is limited in digital transactions, then system complexity is reduced, but fraud risk increases
Solution Approach 1:
The system introduces proximity verification as an intermediary authentication mechanism. Instead of requiring complex identity documentation, the system uses device proximity detection (via GPS coordinates, Bluetooth signals, or NFC communication) as a mediator to verify that transacting parties are physically present together. This intermediary approach reduces verification complexity while mitigating fraud risk.
Solution Approach 2:
The system replaces traditional mechanical identity verification methods (physical ID checks, documentation) with electronic/proximity-based verification. By substituting physical presence confirmation with digital proximity detection, the system maintains security while reducing operational complexity and enabling automated fraud prevention.
3Reliability
If proximity verification is implemented, then fraud prevention is improved, but device complexity increases
Solution Approach 1:
The system leverages existing multi-functional device capabilities (GPS receivers, Bluetooth modules, NFC antennas) already present in modern smartphones and tablets. By utilizing these universal components for proximity verification, the system avoids adding dedicated hardware and minimizes the increase in device complexity while achieving improved fraud prevention.
Solution Approach 2:
The system uses the devices' own built-in location and communication services to perform verification. GPS services provide location data, Bluetooth and NFC provide proximity signaling - all services that devices already provide for other purposes. This self-service approach allows fraud prevention without requiring external verification infrastructure, thereby limiting the increase in system complexity.
Data Source
AI summary
A method may include receiving, using a processing unit at a service endpoint, from a first computing device a request to initiate a transfer from a first account to a second account, the request identifying a transfer amount; determining, using the processing unit, that the transfer amount exceeds a stored threshold transfer limit; receiving an identifier associated with the second account; subsequent to the determining, receiving, using the processing unit, an indication that a geographic location override action has been completed between the first computing device and a second computing device, the second computing device stored as associated with the second account; and in response to receiving the indication, increasing the threshold transfer limit between the first computing device and second computing device for a period of time and authorizing the transfer.