Bidirectional NFC Channel Orchestration for Secure POS Transactions

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Solution Overview

Problem

Near Field Communication (NFC) protocols are limited by unidirectional communication channels, leading to latency, complexity limitations, and vulnerability to cybersecurity attacks, making them unsuitable for complex interactions and secure transactions.

Innovation Solution

Utilizing two independent unidirectional NFC channels within the NFC layer for bidirectional data messaging, synchronized and orchestrated through a separate communication channel and timing orchestration, with collision management and failover mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If unidirectional NFC channels are used for communication, then communication simplicity is maintained, but communication latency increases and bidirectional interaction becomes impossible

Engineering Contradiction:

Improvecommunication channel structureVSAvoidcommunication latency

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent divides the communication system into two separate unidirectional NFC channels: a first channel for transmitting data from the initiating device to the counterparty device, and a second channel for transmitting data from the counterparty device to the initiating device. This segmentation allows simultaneous bidirectional communication without the latency and complexity issues of switching between unidirectional modes.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If single unidirectional NFC channel is used, then hardware simplicity is maintained, but communication capability and protocol complexity are limited

Engineering Contradiction:

ImproveNFC channel configurationVSAvoidcommunication protocol capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent adds a dimensional aspect to NFC communication by utilizing two distinct unidirectional channels operating in parallel, effectively transforming a one-dimensional unidirectional communication model into a two-dimensional bidirectional communication system. This enables complex protocols, handshakes, and data payloads that require simultaneous send and receive capabilities.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 efficient, secure, and reliable bi-directional communication, reducing latency and enhancing transaction security, even when devices are out of proximity.

Implementation Method 1

NFC can communicate across inductive coupling across electromagnetic coil elements on each of the two devices

Methodology Applied

Scientific EffectInductive coupling: Electromagnetic Induction

Data Source

PatentUS20260059282A1Systems and methods for communications over near field communication channels

Publication Date: 2026.02.26 ROYAL BANK OF CANADA

AI summary

An improved approach is proposed for adapting available NFC channels to establish a bi-directional NFC channel where no such channel would otherwise be available. The approach is adapted for usage between a mobile device and a target receiver, such as a point of sale (POS) device, both having NFC capabilities. Specific approaches are proposed to orchestrate communications to prevent collisions. The NFC channels can be operated alongside secure elements to establish a dynamic cryptographic handshake that is used for enhancing trust levels for sensitive communications or transactions.