Visitor Access Control via Facial Recognition Profiles

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Solution Overview

Problem

Existing access control systems for restricted zones require users to handle their mobile devices for authentication, which can be cumbersome and lead to delays, especially in high-traffic situations, and do not provide sufficient flexibility for visitor access management.

Innovation Solution

An access control system that uses a combination of radio communication and facial recognition, where a visitor's profile is created with a reference template generated from image data, allowing for seamless access without needing to handle their mobile device, and includes features like time-limited registrations and flexible communication channels for invitation data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If users authenticate by handling mobile devices, then access control can be implemented, but user-friendliness deteriorates and delays occur in high-traffic situations

Engineering Contradiction:
Improveuser-friendlinessVSAvoidaccess delays
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent extracts the authentication function from the mobile device itself and replaces it with facial recognition technology. The system captures facial images and compares them against stored profiles, eliminating the need for users to handle or present mobile devices at access points. This extraction of the authentication mechanism from the mobile device resolves the contradiction by providing contactless, rapid verification that improves both ease of operation and reduces access delays.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical interaction of handling mobile devices with optical recognition technology. Instead of requiring physical presentation of a device, the system uses cameras to capture and process facial images for authentication. This substitution of mechanical operations with optical and computational processes eliminates the time required for device handling while maintaining secure access control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If comprehensive user verification is performed, then security is improved, but processing time increases and productivity deteriorates

Engineering Contradiction:
ImprovesecurityVSAvoidaccess processing speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent performs preliminary actions by capturing and storing facial images during the invitation and registration phases, before actual access is needed. User profiles with facial templates are created in advance, so that during access control, the system only needs to compare the captured image against pre-stored profiles rather than performing complex verification in real-time. This preliminary preparation maintains high security while significantly improving processing speed at the access point.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If traditional access control systems are used, then access control functionality is provided, but flexibility for visitor management deteriorates

Engineering Contradiction:
Improvevisitor access flexibilityVSAvoidsystem infrastructure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal system where mobile devices serve multiple functions: they act as both invitation senders and the basis for creating facial recognition profiles. The same mobile device application that sends invitations also captures the visitor's facial image and transmits it to the access control system. This multi-functionality eliminates the need for separate registration infrastructure while providing flexible visitor management capabilities.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

This solution enables quick and efficient access control by limiting the number of user profiles checked, reducing delays and errors, while ensuring security with a low-cost image processing algorithm, and allows for visitor access management without additional infrastructure.

Implementation Method 1

a transmitting and receiving device for communicating with a visitor's mobile electronic device via a radio link

Methodology Applied
Scientific EffectRadio communication: Electromagnetic Induction

Implementation Method 2

The image data is processed by the access control system to generate a reference template, which is stored in the visitor profile

Methodology Applied
Scientific EffectFacial recognition: Image Processing

Data Source

PatentEP3610466B1Visitor registration and access control method
Publication Date: 2024.05.01 INVENTIO AG
  • EP3610466B1 patent drawingFigure 1~2
  • EP3610466B1 patent drawingFigure 3
  • EP3610466B1 patent drawingFigure 4

AI summary

A registration method for a visitor (2) is implemented in an access control system (1) for the purpose of controlling access to an access-restricted zone (8) in a building or on a premises. In response to an invitation from a host, the visitor (2) transmits a digital image, an identification number of the invitation and a device-specific identifier of the electronic device (6) belonging to the visitor (2) to the access control system (1). The image data and the identifier are assigned to a user profile created in advance for the visitor (2) using the identification number of the invitation. The image data are processed by the access control system in order to generate a reference template, wherein the reference template is stored in the visitor profile.