# physical - Functional Specification

**Version**: v1.0.0 | **Status**: Active | **Last Updated**: February 2026

## Purpose

Provides physical security practices, access control systems, surveillance monitoring, physical asset protection, physical vulnerability assessment, and security perimeter management for the Codomyrmex platform.

## Design Principles

- **Least Privilege**: Grant minimum necessary physical access
- **Asset Tracking**: Maintain accurate inventory of physical assets
- **Event Logging**: Log all physical security events
- **Continuous Monitoring**: Monitor physical security continuously
- **Defense in Depth**: Multiple layers of physical security

## Functional Requirements

1. **Access Control**: Manage physical access permissions with expiration
2. **Asset Inventory**: Register, track, and manage physical assets
3. **Surveillance**: Monitor and log physical security events
4. **Vulnerability Assessment**: Assess physical security vulnerabilities
5. **Perimeter Management**: Manage security perimeter and access points

## Interface Contracts

### Access Control

- `AccessControlSystem`: Manages physical access control
- `AccessPermission`: Represents an access permission
- `check_access_permission()`: Check if user has permission
- `grant_access()`: Grant access permission
- `revoke_access()`: Revoke access permission

### Asset Inventory

- `AssetInventory`: Manages physical asset inventory
- `PhysicalAsset`: Represents a physical asset
- `register_asset()`: Register a new asset
- `track_asset()`: Update asset tracking
- `get_asset_status()`: Get asset status

### Surveillance

- `SurveillanceMonitor`: Monitors physical security events
- `PhysicalEvent`: Represents a physical security event
- `monitor_physical_access()`: Monitor access events
- `log_physical_event()`: Log security events

### Physical Vulnerability Assessment

- `PhysicalVulnerabilityScanner`: Scans for physical vulnerabilities
- `PhysicalVulnerability`: Represents a physical vulnerability
- `scan_physical_vulnerabilities()`: Scan for vulnerabilities
- `assess_physical_security()`: Assess overall security

### Perimeter Management

- `PerimeterManager`: Manages security perimeter
- `AccessPoint`: Represents a physical access point
- `check_perimeter_security()`: Check perimeter status
- `manage_access_points()`: Get all access points

## Error Handling

All operations handle errors gracefully:
- Missing assets return None or False
- Invalid permissions are denied
- Event logging failures are logged but don't stop operations

## Configuration

Module uses default configurations but can be customized:
- Access control policies
- Asset tracking intervals
- Surveillance event retention
- Vulnerability scan frequency

## Navigation

- **Human Documentation**: [README.md](README.md)
- **Technical Documentation**: [AGENTS.md](AGENTS.md)
- **Parent**: [../SPEC.md](../SPEC.md)

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