What is a drawback of closed access control systems?

A closed access control system is typically designed to be self-contained with limited interaction with external entities. One of the main drawbacks of such systems is their limited flexibility in upgrading. This inflexibility arises because closed systems often rely on proprietary technologies and components. When it comes time to adapt to new security threats, updated technologies, or evolving organizational needs, these systems may not easily support integration with new hardware or software solutions without significant modifications or complete replacements.

In contrast, open access control systems generally provide greater interoperability, allowing for easier upgrades and scalability. The rigidity of closed systems means that organizations may face challenges in keeping their security measures current or expanding them to meet new requirements, potentially leading to vulnerabilities or inefficiencies over time. Therefore, the limited flexibility to upgrade and adapt to advancements in technology is a pronounced limitation of closed access control systems.