I know this is an old topic but this info was worth its weight in gold to me. While suffering a wicked sore throat and other cold symptoms, I did a series of teaching sessions at a university with which I'm associated. Students moving in and out of the sessions, custodial staff needing to lock the room on schedule, one student with a forgotten coat, a number of supplies to pack up -- what with one thing and another I forgot that I had an Evernote web session active in a browser tab. If not for the tip given above, my extensive Evernote data would have been open an accessible in a Uni environment away from my control. Hopefully, my revoke has ended the session I left open inadvertently… Thanks, Swefen!