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Published: September 10, 2026
A timeout affects security, accessibility, and unfinished work. The interface team should not invent its behavior after the authentication policy is already fixed.
Record the policy inputs
Ask the security owner for the inactivity rule, absolute limit, warning window, extension conditions, and actions that require fresh authentication. Identify pages where losing entered data would cause real harm.
Write the warning sequence
The warning should state how much time remains and provide a direct way to continue when policy allows it. Define screen-reader announcements and focus behavior. Avoid resetting the session because of background requests that do not show user activity.
Plan recovery
Say what data can be saved locally or on the server, how long it remains, and where a person returns after signing in again. Test warning, extension, expiry, multiple tabs, and a failed save. Security and privacy owners must approve preservation rules.
Further reading
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Keep this decision with the approved page brief and acceptance record.
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