Prevent
Surveillance that produces evidence—not just video.
The goal is investigative clarity: control-point coverage, reliable lighting overlap, accurate timestamps, and a repeatable export workflow.
System design
Configuration priorities
- Fixed cameras at gates, staging, docks, and egress routes
- Lighting overlap to preserve nighttime detail
- Time synchronization (NTP) across all devices
- Retention targets based on discovery and reconciliation cycles
- Account-level remote access with MFA where available
- Evidence export SOP with chain-of-custody notes
PTZ cameras: useful, but not a substitute
PTZ cameras can help during live response, but investigations depend on consistent coverage. Use PTZ as a supplement to fixed cameras placed at control points.
Evidence retention should be set before an incident occurs. Short retention can erase the window investigators need—especially when loss is discovered after a delayed audit.
Retention must match discovery lag
If reconciliation happens weekly, retention should not be 7 days. Set retention based on how long it takes you to reliably detect a variance.