Physical Access Control With Temporary Area-Based Credential Revocation

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Solution Overview

Problem

Existing access control systems struggle to effectively respond to security-impacting events by temporarily revoking access rights to protect sensitive assets from potential compromise.

Innovation Solution

A computer-implemented method and system that electronically detects security-impacting events, determines compromised areas, and automatically temp or revokes access control rights for users within those areas, using a processor and storage medium to manage access control credentials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If access control rights are permanently revoked to protect sensitive assets, then security protection is improved, but operational flexibility and user convenience deteriorate

Engineering Contradiction:

Improvesecurity protectionVSAvoidoperational flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The access control system dynamically adjusts access rights based on real-time security conditions. When a security event is detected, the system temporarily revokes access credentials for specific users to compromised areas. When the security event is resolved, access rights are automatically restored. This dynamic adjustment resolves the contradiction by making security protection adaptive rather than static, allowing the system to be restrictive when needed and permissive when safe.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the temporal parameter of access control credentials from permanent to temporary during security incidents. Access rights are modified in duration (from ongoing to time-limited) and scope (from full access to restricted access) based on security conditions. This parameter change allows the system to maintain strong security postures during threats while preserving normal operational flexibility during peaceful periods.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If access control credentials are temporarily revoked during security incidents, then protection of sensitive assets is improved, but system complexity increases

Engineering Contradiction:

Improveasset protectionVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The access control system performs self-service by automatically detecting security events, determining credential compromise, revoking access rights, and restoring access without human intervention. The system monitors its own security state and autonomously adjusts credentials accordingly. This self-service capability resolves the contradiction by automating the complex security response processes, reducing the need for manual security management while maintaining high asset protection levels.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements continuous feedback loops where security events are detected, trigger credential revocation, and subsequent monitoring determines when to restore access. The system constantly monitors security conditions and adjusts credentials based on this feedback. This feedback mechanism resolves the contradiction by creating a closed-loop system that automatically responds to security conditions, managing complexity through automated decision-making rather than manual processes.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If manual revocation of access credentials is performed, then security control precision is improved, but response time deteriorates

Engineering Contradiction:

Improvesecurity control precisionVSAvoidresponse time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary actions by pre-configuring access control policies, credential management rules, and security event thresholds before incidents occur. When security events are detected, the system executes pre-planned credential revocation and restoration sequences. This preliminary configuration resolves the contradiction by having security responses ready in advance, enabling immediate automated execution with precise control rather than delayed manual decision-making.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system replaces manual mechanical processes of credential revocation with automated electronic processes. Instead of security personnel physically managing credentials or manually updating access systems, the system uses automated electronic detection, decision-making, and credential management. This substitution resolves the contradiction by eliminating human response delays while maintaining precise security control through automated rule-based decision-making.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260030943A1Physical security system and method to temporarily revoke a portion of access control credentials during an incident

Publication Date: 2026.01.29 MOTOROLA SOLUTIONS INC

AI summary

A physical security system and method to temporarily revoke a portion of access control credentials during an incident is disclosed. The method includes determining a defined area with respect to which one or more protected assets therein have respective one or more asset securities potentially compromised due to one or more occurrences of respective one or more security-impacting access control events. The method also includes automatically and temporarily revoking a portion of access control rights possessed by at least some of a plurality of users registered with access control credentials for the physical access control system. The portion of the access control rights being temporarily revoked corresponds to physical entry rights via one or more access control points bordering or within the defined area.