7 min read
Poor design
Many failures trace back to design decisions: cameras chosen for installation convenience rather than the scene, mag locks on doors that need fail-secure behavior, access control on doors whose frames can't support the hardware. These show up months or years after handover and are expensive to fix.
Wrong hardware on the wrong door
An electric strike on a frame that can't accept it, a mag lock without proper egress hardware, a reader specified for the wrong credential type, a camera with the wrong lens for the distance — all common, all preventable with opening-by-opening design.
Bad cabling
Cabling that's marginal at install grows worse with temperature, vibration, and time. Cables run too long for the protocol, terminated badly, or routed near sources of interference produce intermittent failures that are hard to diagnose and easy to blame on devices.
No documentation
Without as-builts, labeling, or programming records, every service call starts from scratch. The cost shows up as longer service visits, more guesswork, and changes that contradict the next change.
No testing after install
Systems that get cursory testing at handover hide problems that the owner discovers later — usually at a bad time. Full functional testing of every door, camera, zone, and integration before turnover catches problems while it's still the installer's responsibility to fix them.
No maintenance
Door alignment drifts, batteries die, cameras lose view, credentials accumulate, gate operators wear, sensors fall out of calibration. None of these failures are dramatic on day one — they just compound until the system stops being trusted.
Systems installed as separate silos
When access, video, alarms, intercoms, and lockdown are installed by separate vendors with no integration, the owner ends up running five systems instead of one. Manual workflows replace event correlation, audits become harder, and the cost of operation grows.
Inadequate training
Software that admins don't know how to use, audit trails nobody knows how to pull, and lockdown workflows that haven't been practiced all produce the same outcome: the system underperforms its capability when it matters.
What prevents these failures
- Design before installation — every opening, every camera, every integration
- Coordination across trades — electrical, IT, construction, and life-safety
- Documentation as a deliverable, not an afterthought
- Acceptance testing of every component and workflow
- Scheduled preventive maintenance
- Admin training and runbooks
- Integration planned from day one