What represents a digital identity in access control?

A digital identity in access control refers to the representation of a user in a digital format that is utilized to grant access to systems or resources. User credentials stored in a database embody this concept, as they typically include information such as usernames, passwords, or biometric data that authenticate and identify a user electronically. These credentials allow a system to verify the identity of an individual attempting to access resources, ensuring secure access management.

In contrast, physical copies of identification documents do not provide a digital representation as they exist in the physical world. Temporary access codes generated for visitors are often time-limited and do not represent a persistent digital identity; they serve as a temporary grant for access. Access logs, while essential for tracking user activity and ensuring security, do not serve as a representation of digital identity but rather record the instances of access that have already occurred. Thus, the concept of digital identity is best exemplified by user credentials stored in a database.