What characterizes multi-tenant access control systems?

Multi-tenant access control systems are designed specifically to accommodate multiple users, often within shared facilities like apartment complexes, office buildings, or commercial spaces, while ensuring that each user maintains their individual security and privacy. This means that each tenant or user is assigned unique access credentials, such as keycards or codes, which allows them to access only the areas or resources designated for their use, without compromising the security of other tenants.

This approach is essential in situations where multiple parties share the same physical infrastructure but require distinct levels of access control to protect sensitive information or private spaces. Features such as user-specific permissions, logging of access events, and the ability to easily revoke access rights are crucial elements that contribute to the overall security and functionality of multi-tenant systems.

In contrast, the other options provided suggest limitations or drawbacks that do not align with the fundamental purpose of a multi-tenant access control system. For instance, denying access to only one user at a time would not be practical or efficient in multi-tenant scenarios where simultaneous access is necessary for different users. Requiring physical keys for each tenant can be cumbersome and does not allow for the flexibility and convenience offered by modern electronic systems. Lastly, a lack of security features contradicts the very essence of an