Evidentiary Quality. Mission Critical.
Deploying CJIS-compliant video, access control, and interview room recording systems for police departments and correctional facilities.
ZEI deploys CJIS-aligned video, access, and interview-recording systems for police departments and corrections. Evidentiary-quality recording, evidence-room chain of custody, sally-port control, and hardened facility perimeter — engineered for environments that get scrutinized by attorneys, examiners, and the public.
Technology Partners
A representative law enforcement environment of the kind ZEI engineers infrastructure for.
What this industry deals with.
- CJIS data-handling requirements across video, access, and cloud
- Chain-of-custody integrity from recording through retention through court
- Vandal-resistant hardware in cell blocks and high-stress areas
- Sally-port interlock and prisoner-transfer safety
- Public-records requests requiring efficient redaction workflows
Justice & Corrections Tech
Systems designed for the highest level of scrutiny and reliability.
Interview Recording
Frame-by-frame evidence.
Specialized audio/video systems with redundant storage and metadata tagging for suspect interrogations.
Evidence Room Security
Chain of custody.
Multi-factor authentication, anti-passback, and continuous video coverage to secure the evidence chain.
CJIS Compliance
Federal data standards.
Ensuring all cloud storage, encryption, and access logs meet Criminal Justice Information Services requirements.
Sally Port Control
Secure prisoner transfer.
Interlocked doors and gates with integrated video intercoms to ensure safe vehicle and suspect movement.
How this gets applied.
Interview and interrogation recording
Multi-angle audio/video recording with redundant storage, metadata tagging, and immutable chain of custody.
Evidence-room access
Multi-factor authentication, anti-passback, and continuous video coverage with audit trail aligned to chain-of-custody requirements.
Sally-port interlock
Interlocked vehicle gates and pedestrian doors with intercom verification and override-only-with-authority workflows.
Cell-block surveillance and intercom
Vandal-resistant cameras and intercoms with 24/7 recording and operator console at central control.
Systems we typically deploy.
An opinionated, ordered stack — what most law enforcement engagements include, in priority order.
Video Surveillance
ZEI engineers commercial video surveillance systems built around modern IP cameras, edge AI analytics, and cloud or on-premise video management
Access Control
ZEI deploys cloud-managed and enterprise access control across single-door deployments and multi-site campuses
Intercom Systems
ZEI deploys IP and SIP-based intercom systems that connect entry stations to mobile apps, desk phones, and security operations — bringing visitor management, video, and access control into a single workflow
Intrusion Alarm
ZEI engineers commercial intrusion detection systems that integrate with video surveillance and access control to verify threats before responders are dispatched
Cloud Infrastructure
ZEI hosts and manages cloud infrastructure for physical security, video, and building systems on AWS, GCP, and Azure
Physical AI
ZEI deploys physical AI — computer vision, behavioral analytics, and machine learning — that turns existing camera infrastructure into intelligent sensors
Built to the standards that apply.
CJIS Security Policy
Encryption, identity, and audit controls aligned to FBI Criminal Justice Information Services requirements.
NDAA Section 889
Mandatory exclusion of restricted Chinese-origin equipment.
Discovery and FOIL/FOIA
Tools for video redaction, export with hash verification, and audit-trail documentation for legal release.
Facility Types
Solutions for different law enforcement environments.
Police Headquarters
Securing the department and managing public interaction.
- Public lobby monitoring
- Armory access control
- Dispatch center security
- Fleet yard surveillance
- Interrogation rooms
Correctional Facilities
High-security environments focused on containment and safety.
- Vandal-resistant cameras
- Perimeter fence alarms
- Cell block intercoms
- Contraband detection
- Guard tour tracking
From the engineering blog.
Background reading our team draws from when designing infrastructure for law enforcement.
Edge AI Analytics: Moving Intelligence from the Server to the Camera
Edge AI moves video analytics from the data center to the camera itself, cutting bandwidth and latency. Here is when edge wins and when cloud still does.
Hybrid Cloud Video Storage: Balancing Retention, Bandwidth, and Cost
The debate over where to store surveillance video has evolved beyond the binary choice of on-premises NVR versus cloud.
Cybersecurity Best Practices for IP Cameras
Why IP Cameras Are a Cybersecurity Risk IP cameras are among the most vulnerable devices on any enterprise network.
Frequently asked.
Are your systems CJIS compliant?
How do you handle interview-room recording?
Can you integrate with our records management (RMS) and CAD?
What about public-records redaction?
Talk to an engineer.
Tell us about your law enforcement facility and what you're trying to solve. Our engineering team will respond with a system design tailored to your environment.
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