Privacy Guard

You're planning a suprise party for your Comrade™, but he glides in, and ruins the surprise! Don't let this happen to you! Privacy Guard lets you close all your secret Web browser windows with only a phone and a magnet. Simply attach a magnet to your door, and attach a phone close to it. Tap Connect on your phone, and type the ID into the Chrome extension or AutoHotKey widget. Now, when the door is opened, your super secret windows will close instantly!