A company has a secure website that requires visitors to log in prior to accessing any content beyond the homepage. A visitor can log out manually…

To comprehensively track visitor login status, it is essential to capture all possible, mutually exclusive states. "Unregistered / Logged Out" (A) represents new or unknown visitors. "Registered / Logged Out" (C) identifies known users who are not currently authenticated, a key segment for re-engagement. "Registered / Logged In" (D) identifies authenticated users. Together, these three statuses provide a complete picture of the visitor's relationship and current authentication state with the site, allowing for robust segmentation and analysis without overlap or gaps.

B. "Anonymous" is too ambiguous as it could refer to either an unregistered visitor or a registered visitor who is currently logged out, conflating states A and C.
E. "Incomplete Registration" is a transient state within a specific conversion funnel (registration process), not a persistent, general login status of a visitor browsing the site.
F. "Unregistered / Logged In" is a logically impossible state; a visitor cannot be logged into an account that has not been registered.

1. Adobe Experience League. (2023). Implementation Best Practices Guide. In the section on Customer Attributes and Visitor ID, the guide discusses the importance of distinguishing between visitor states such as authenticated vs. unauthenticated. While not listing these exact values, the principle of capturing these distinct states is a core concept. (This is a conceptual reference as direct documentation for this specific use case is about the how, not the what).

2. Adobe Experience League. (2024). getValOnce - Capture value on first hit. "A common use case for this function is to capture the original login status of a visitor." This documentation implies the need to capture distinct statuses, for which A, C, and D represent a complete and logical set.