This is similar to bug 26538, but for the user side I presume
It is requested that people be able to set an option that would allow them to configure the duration time of their login session.
Multiple Wikipedia users sharing the same computer/browser in a household.
We have seen a number of times now that people/siblings/partners accidentally use each others accounts in this situation. The option would forcefully expire the login session after a certain amount of time, independent of the cookie expiration of the browser.