Bluetooth Access Control Filtering for Seamless Room Entry

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Solution Overview

Problem

Existing access control systems in buildings, such as hotels or office buildings, require users to manually interact with physical keys or key cards, or rely on complex mobile device interfaces for room selection, which can be cumbersome and inefficient, especially in large facilities.

Innovation Solution

A method and system using Bluetooth communication between a mobile communication device and access control devices, where the mobile device receives advertising packets with designators and operation information, determines relevance, establishes a connection, and executes an access control protocol to control access to spaces, optimizing the selection process by filtering and prioritizing access control devices based on signal strength, transmission power, and user rights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If users manually browse through all available rooms or areas in a large building, then they can find their authorized spaces, but the process becomes time-consuming and complex, especially in buildings with hundreds of rooms

Engineering Contradiction:
Improveaccess control efficiencyVSAvoidtime for room selection
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The access control device automatically performs the selection process by receiving advertising packets from multiple access control devices, determining relevance based on user credentials, and automatically connecting to the appropriate device without requiring manual user selection. This self-service approach eliminates the time-consuming manual browsing process while maintaining secure access control.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system pre-determines relevance of access control devices to users by comparing user credentials with stored access rights data before the user needs to access a space. This preliminary filtering and prioritization of access control devices based on signal strength and transmission power prepares the system in advance, so when access is needed, the correct device is already identified and ready for connection.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the mobile device connects with multiple access control devices to ensure access to all possible spaces, then access flexibility is improved, but energy consumption and device complexity increase

Engineering Contradiction:
Improveaccess flexibilityVSAvoidenergy consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The mobile device automatically determines which access control devices are relevant to the user by comparing received designators with stored access rights data, and automatically prioritizes and connects only to relevant devices. This self-service mechanism maintains access flexibility by dynamically identifying appropriate devices while avoiding unnecessary connections that would waste energy.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes the parameter of connection establishment by introducing a relevance determination step that filters access control devices based on user credentials, signal strength, and transmission power. This parameter-based filtering ensures connections are only made to relevant devices, optimizing energy consumption while preserving access versatility.

Inventive Principle:
Principle #35Parameter changes

3Loss of information

If the system provides detailed information about all rooms and areas, then user awareness of available spaces is improved, but the user interface complexity and distraction increase, especially for elderly and young users

Engineering Contradiction:
Improveinformation about available spacesVSAvoiduser interface complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The access control device performs the information processing task automatically by receiving advertising packets, determining relevance based on user credentials, and selecting the appropriate device for connection. This self-service approach eliminates the need for complex user interfaces that display and navigate through detailed room information, while still ensuring users have access to their authorized spaces.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system extracts only the necessary information (relevant access control device identification) from the complete set of available spaces and presents it automatically to the user. By taking out only the essential information needed for access rather than displaying all available spaces, the system reduces interface complexity while maintaining information availability for authorized access.

Inventive Principle:
Principle #2Taking out (Extraction)

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 access control efficiency by reducing unnecessary interactions, saving time and energy, and improving usability, particularly for elderly and young users, by allowing seamless access to authorized spaces without manual room selection, while minimizing energy consumption and distractions.

Implementation Method 1

the access control device operating a Bluetooth communication circuit of the access control device in a peripheral role and transmitting an advertising packet

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

the mobile communication device operating a Bluetooth communication circuit of the mobile communication device in a central role and receiving the advertising packet

Methodology Applied
Scientific EffectElectromagnetic radiation detection: Electromagnetic Induction

Data Source

PatentUS20250363842A1Method, mobile communication device and access control device for controlling access to a space
Publication Date: 2025.11.27 LEGIC IDENTSYSTEMS AG
  • US20250363842A1 patent drawing
  • US20250363842A1 patent drawing
  • US20250363842A1 patent drawing

AI summary

A method of controlling access to a space using an access control device and a user's mobile communication device, wherein the access control device operates a Bluetooth communication circuit and transmits an advertising packet comprising a designator associated with the space, wherein the mobile communication device operates a Bluetooth communication circuit and receives the advertising packet, and wherein the mobile communication device determines whether the access control device is relevant for the user, using the designator, and access right data stored in the mobile communication device, and wherein the mobile communication device, upon determining that the access control device is relevant for the user, establishes a connection with the access control device, and wherein the mobile communication device and the access control device execute an access control protocol.