Workplace & Facilities · People & Workplace
Should you build or buy Physical Security & Access Control?
Physical security and access control software manages who can enter which doors, when, and under what conditions — integrating with card readers, key fobs, mobile credentials, and surveillance cameras to enforce access policies and maintain audit logs. Security teams use it to control building entry, log access events, and respond to alarms from a centralized platform.
The build-vs-buy decision for Physical Security & Access Control is shaped almost entirely by the hardware dependency — door controllers, readers, and electric strikes are physical infrastructure with proprietary protocols that the software must speak, which makes the build path impractical for most organizations; the real strategic question is cloud-managed versus on-premises, not build versus buy.
Build it, buy it, or bridge?
When building makes sense
Self-builds exist and are documented — hackerspaces and small offices running Leosac or Raspberry Pi-based controllers are real. But enterprise practitioners describe open-source access control as rare and explicitly unsuited to organizations with compliance requirements. AI makes the analytics and anomaly-detection layers easier to add, but it doesn't change the foundational constraint: the system has to physically unlock a door reliably, at 2am, with zero tolerance for downtime. The build path requires someone who can integrate firmware with hardware controllers, maintain certificate management for mobile credentials, and ensure the system still opens the right doors during a fire alarm. For organizations without a dedicated security systems engineer, that scope is prohibitive.
When buying makes sense
Physical security software is one of the clearest buy cases in facilities technology because the software is inseparable from the hardware. A door controller, card reader, and electric strike aren't abstractions. Genetec, Verkada, and Brivo sell managed software on top of that hardware, and at $1,000 to $5,000 per door for installation and hardware, the monthly software fee is often the smaller line item. The compliance requirements also drive the case: SOC 2 Type II physical security controls, HIPAA's physical safeguards, and FISMA requirements all expect documented, audited access control systems. The strategic conversation for most organizations is cloud-managed versus on-premises, not whether to build.
The desk read
Physical security software is inseparable from physical hardware. A door controller, card reader, and electric strike are not abstractions you can swap out. Genetec, Verkada, and Brivo sell managed software atop that hardware stack, and the real cost of access control is the door, not the license. At $1,000 to $5,000 per door for installation and hardware, the per-door monthly software fee is often the smaller line item. Buying earns its keep almost universally here because there is no practical build path that bypasses the hardware dependency and the safety-critical reliability requirements.
The edge cases for self-builds are narrow: hackerspaces and small offices with a developer willing to run Raspberry Pi controllers and open-source projects like Leosac. Enterprise practitioners describe that tier as rare and explicitly not suited to organizations with compliance requirements. AI makes the analytics and anomaly-detection layers easier to extend, but it doesn't change the fact that the underlying system has to physically unlock a door reliably, at 2am, with zero downtime. The strategic question for most organizations is cloud-managed versus on-premises, not build versus buy.
Frequently asked
What is Physical Security & Access Control software?
Physical security and access control software manages who can enter which doors, when, and under what conditions — integrating with card readers, key fobs, mobile credentials, and surveillance cameras to enforce access policies and maintain audit logs.
When does building Physical Security & Access Control make sense?
Building makes sense only at small scale with minimal compliance requirements — hackerspaces and small offices running open-source controllers like Leosac. Enterprise-grade reliability and compliance requirements make the self-build path impractical for most organizations.
When does buying Physical Security & Access Control make sense?
Buying earns its keep almost universally — the software is inseparable from physical hardware with proprietary protocols, and safety-critical reliability requirements (the door must open during a fire alarm) create a floor that custom builds don't meet without dedicated security systems engineering.
What are the main Physical Security & Access Control vendors?
Representative vendors include Genetec Security Center, Brivo, Verkada, Avigilon Alta. B4 Pro scores the full set.
Is cloud-managed access control replacing on-premises systems?
Yes, that's the active market shift. Cloud-managed platforms from Brivo and Verkada handle software updates, remote management, and mobile credentials without on-site servers. The build-versus-buy question is largely settled; the architectural question is whether the software runs in the cloud or on-premises.