Mobile Signature Proximity Verification for In-Person Authentication

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Solution Overview

Problem

Conventional electronic signature systems face challenges in ensuring the authenticity of the signer's identity due to remote configuration, often requiring lengthy onboarding processes that are impractical for quick, in-person signature needs.

Innovation Solution

A method and system using mobile devices for in-person electronic signatures, where a first device generates a code scanned by a second device, enabling local wireless communication to verify proximity and transmit metadata for secure signature authentication without lengthy onboarding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If remote electronic signature configuration is used, then electronic signatures can be performed remotely over email, but it is challenging to ensure the authenticity of the signer's identity

Engineering Contradiction:

Improveremote signature capabilityVSAvoidsigner identity authentication

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent introduces a proximity verification intermediary mechanism using local wireless communication between mobile devices. This intermediary layer verifies that signers are physically present near each other during the signing process, thereby ensuring identity authenticity while maintaining remote operability through the digital platform

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If conventional remote electronic signature systems are used, then signatures can be performed remotely, but lengthy onboarding processes are required

Engineering Contradiction:

Improveremote signature capabilityVSAvoidonboarding process duration

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent implements preliminary action by pre-configuring mobile devices with digital signature capabilities and proximity verification functions before the signing event. This eliminates the need for lengthy onboarding processes during the actual signing, as devices are already prepared to authenticate and execute signatures immediately

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system enables self-service by allowing users to independently complete signature processes using their own mobile devices without requiring manual onboarding or administrative setup. The proximity-based verification and digital signature functions are automatically activated and executed by the devices themselves

Inventive Principle:

Principle #25Self-service

3Reliability

If in-person electronic signatures with proximity verification are implemented, then signer authenticity is ensured, but local wireless communication infrastructure is required

Engineering Contradiction:

Improvesigner identity authenticationVSAvoidcommunication infrastructure requirements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent leverages the universality of mobile devices by utilizing their built-in wireless communication capabilities (Bluetooth, Wi-Fi, NFC) that already exist in modern smartphones and tablets. This approach avoids adding specialized hardware infrastructure, as the devices' existing multi-functional communication systems are repurposed for proximity verification in the signature process

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12470402B2In-person electronic signature with mobile devices

Publication Date: 2025.11.11 FRIENDA CO

AI summary

Techniques for in-person electronic signatures using mobile devices are disclosed. A method includes generating a code corresponding to an electronic document. The code may include a device identifier associated with a first device. The method may include receiving a request from a second device that scanned the code. The method may include receiving metadata received in response to input at the second device in response to determining that a proximity of the first device to the second device satisfies a threshold using network information. The method may include modifying the electronic document based on the metadata.