What does In-Band Authentication rely on for user verification?

In-Band Authentication relies on identity signals from the system requesting authentication, which means that the verification process occurs over the same communication channel that is used to send and receive data. This typically involves the user providing their credentials, such as a username and password, directly to the system requesting access.

This method allows for a streamlined process where the authentication happens simultaneously with the user's request for access, making it efficient for environments that do not require additional layers of verification. Identity signals can include, for instance, the credentials stored and managed by the authentication system, allowing the system to validate the user's identity effectively.

In contrast, mechanisms that use separate channels or physical presence for verification diverge from the concept of In-Band Authentication, as they require different methods or pathways to confirm identity, which can complicate the authentication process.