Magnetic Stripe Emulation With Dynamic Credentials for Digital Wallets
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Solution Overview
Problem
Magnetic stripe transactions using digital wallets are hindered by the lack of physical card presence, which compromises security checks typically performed by sales clerks, and many stores lack NFC capabilities for digital wallet technology.
Innovation Solution
A system that uses a mobile device to store and encrypt session keys, allowing magnetic stripe emulation by encoding transaction data in a magnetic field, ensuring security through encryption and limited-use credentials, and dynamically generated values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If magnetic stripe emulation is used to enable transactions at legacy terminals, then compatibility and usability are improved, but security is worsened due to lack of physical card presence
Solution Approach 1:
The system dynamically generates unique transaction credentials for each payment session using cryptographic key derivation. The simulated magnetic stripe data changes with every transaction based on a master secret and session-specific parameters, making each emulation unique and secure rather than static and vulnerable
Solution Approach 2:
The system transforms the static magnetic stripe data into dynamic parameters by deriving session-specific credentials from a master secret key. Each transaction uses different cryptographic parameters (counter values, random nonces) to generate unique track data, maintaining security while enabling legacy terminal compatibility
2Reliability
If NFC technology is used for digital wallet transactions, then security is improved through contactless authentication, but device complexity and infrastructure requirements worsen
Solution Approach 1:
The system creates a functional copy of the magnetic stripe card data in digital form, storing it securely in the device's secure element. This digital copy can be emulated on legacy magnetic stripe readers, providing NFC-like security benefits without requiring NFC infrastructure at the terminal
Solution Approach 2:
The system replaces the physical mechanical card-swiping action with electronic magnetic field generation. The mobile device's speaker or electromagnetic transducer generates the magnetic field that mimics a swiped card, eliminating the need for physical card presence while maintaining compatibility with magnetic stripe readers
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
Enhances security and usability of digital wallets by enabling transactions at magnetic stripe terminals without physical cards, providing robust protection against data breaches and improving user experience.
Implementation Method 1
A transaction device may encode information in a magnetic field and broadcast the information using a transducer, such as a speaker.
Data Source
AI summary
A system, method, and computer readable medium (collectively, the “system”) are provided. The system may include a processor configured to perform operations and/or steps comprising receiving, from a transaction account issuer, a token comprising an alias transaction account data; storing the token in a digital wallet of a computing device; selecting a transaction account to be used as payment for a transaction; and transmitting a wireless signal carrying emulated track data for payment of the transaction, wherein the emulated track data emulates physical transaction card data and includes the alias transaction account data in place of actual transaction account data.