Infrared QR Display for Secure Cardless ATM Authentication
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Solution Overview
Problem
Consumers desire to conduct transactions at ATMs without plastic payment cards, and existing machine-readable codes are limited in data capacity and require specialized scanners, making them impractical for widespread use with mobile devices.
Innovation Solution
A transaction device using an infrared array to display QR codes in the IR spectrum, enabling mobile devices to scan and authenticate for secure transactions, such as withdrawals or deposits, without direct communication between the device and the user's mobile device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional machine-readable codes (barcodes) are used, then data can be encoded and read by optical scanners, but the data capacity is limited and specialized scanners are required
Solution Approach 1:
The patent transitions from traditional 1D barcodes to 2D QR codes, adding a dimensional element that dramatically increases data capacity. The QR code's two-dimensional matrix structure allows encoding of significantly more information within the same physical space, resolving the data capacity limitation while remaining readable by standard camera sensors.
Solution Approach 2:
The patent makes machine-readable codes universally readable by equipping standard mobile device cameras with the capability to scan QR codes. This eliminates the need for specialized optical scanners, as the ubiquitous camera sensor can now perform the scanning function, achieving universality across different devices.
2Ease of operation
If plastic payment cards are used for transactions, then the process is simple and secure, but consumers cannot conduct transactions without physical cards
Solution Approach 1:
The patent replaces the mechanical plastic card system with a digital QR code system. Instead of physically inserting a card into an ATM, users display a QR code on their mobile device screen, which the ATM scans to identify the account and initiate transactions. This substitution eliminates the need for physical cards while maintaining transaction security and simplicity.
Solution Approach 2:
The patent creates a digital copy of the payment authentication process. The QR code serves as a digital representation that contains account identification information, replacing the physical card's magnetic stripe or chip. This digital copy can be generated, stored, and presented on mobile devices, enabling card-less transactions.
3Difficulty of detecting and measuring
If QR codes are displayed in visible spectrum, then they can be easily scanned, but they can be seen and potentially compromised by unauthorized users
Solution Approach 1:
The patent changes the spectral wavelength of the QR code from the visible spectrum to the infrared spectrum. This color change makes the QR code invisible to the human eye and undetectable by standard visible-light cameras, while remaining scannable by infrared-capable sensors. This resolves the security vulnerability by preventing unauthorized viewing and photographing of the QR code.
Solution Approach 2:
The patent introduces an intermediary element - the infrared spectrum - between the QR code and the scanning process. By encoding the QR code in infrared wavelengths, a middle layer of security is created that requires specific infrared-capable hardware to access, preventing direct observation or unauthorized scanning by standard devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure and efficient transactions using mobile devices by leveraging advanced QR codes that can encode more data and are universally readable, enhancing security and usability.
Implementation Method 1
an infrared array configured to display images... displaying the first image via the infrared array
Data Source
AI summary
A device for conducting a transaction by generating and displaying QR codes in the infrared spectrum, by generating a first QR code; displaying the first QR code via the infrared array for a predetermined duration of time; receiving a confirmation that a user device has entered paired state with the transaction device based on the user device scanning the first QR code; receiving authentication data indicating that the paired user device is authorized to complete the transaction; completing the transaction.