Final answer:
Sessions are maintained by session cookies or tokens. If the session does not carry over to another platform, it could be due to different session handling, security features, or browser settings. Understanding these mechanisms is vital for maintaining user authentication and security.
Step-by-step explanation:
The question seems to be related to how login sessions are maintained in a web or software application. Generally, a login session is sustained by a session cookie or a token that gets created upon successful authentication. This session token is then sent with each subsequent request to the server to maintain the state of the session, signifying that the user has been authenticated.
If a session carries on one platform but not on another, it could be due to several reasons such as different session handling mechanisms across platforms, security measures that invalidate sessions when switching between platforms, or browser settings that do not allow cookies or tokens to be saved or transferred. Additionally, the presence of a single sign-on (SSO) service or differences in session timeout settings could affect session persistence.
Understanding these concepts is crucial for maintaining user authentication and ensuring security and usability in applications across different platforms or devices.