Mobile Door Access Codes to Replace Lost RFID Cards

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Solution Overview

Problem

Existing access control systems, such as those using RFID cards, are prone to misuse due to lost or misplaced cards, and administering these systems can be time-consuming and costly.

Innovation Solution

A method and system utilizing a mobile computing device to receive a URL, direct a web browser to a webpage, obtain an access code from an access-control system, and transmit an access request comprising a door identifier and the access code, allowing secure access control through doors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If access cards are used for door access control, then access control functionality is provided, but the system becomes vulnerable to unauthorized use when cards are misplaced or lost

Engineering Contradiction:

Improveaccess control securityVSAvoidunauthorized access risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces physical access cards with digital access codes displayed on mobile device screens. The access control system captures an image of the code from the mobile device screen using a camera or image sensor, rather than reading from a physical card. This digital copying approach eliminates the security vulnerability of physical cards being lost or misused, while maintaining access control functionality.

Inventive Principle:

Principle #26Copying

2Reliability

If traditional access card systems are administered, then access control is maintained, but time-consuming and costly administrative processes are required

Engineering Contradiction:

Improveaccess control managementVSAvoidadministrative time consumption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system enables users to self-generate and self-manage their access codes through mobile devices without requiring administrative intervention for code distribution. Users can access their codes through web portals or mobile applications, eliminating the need for administrators to physically distribute and manage access cards. This self-service approach significantly reduces administrative time consumption and costs.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If physical access cards are distributed to users, then access rights are granted, but the system incurs administrative costs and time for card management

Engineering Contradiction:

Improveaccess rights distributionVSAvoidaccess card administration

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical physical access card system with a digital code system displayed on mobile device screens. Instead of distributing physical cards through administrative channels, the system electronically distributes access codes via mobile applications or web portals. This substitution eliminates the complexity of physical card administration including card production, distribution, tracking, and replacement, while simplifying the access rights distribution process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12499726B2Methods and systems for access control

Publication Date: 2025.12.16 GENETEC

AI summary

A method of requesting access through a door by a mobile computing device may involve: receiving a Uniform Resource Locator (URL); directing a web browser application of the mobile computing device to a webpage based on the received URL; receiving an access code from an access-control system, the access code associated with access rights of a user of the mobile computing device; and transmitting an access request to the access-control system, the access request comprising data representing at least an identifier of the door and the access code.