Many a times you have a lot of documents, webpages and even videos running which you do not want anybody to notice or even get a glance but with people approaching so fast you can either press win + D or just lock your windows and still get caught with the video running in the background. And not to mention to bring back all windows back after the shock..!!
Magic Boss Key is a free windows application acts a nuke button to hide all your windows with just one key ( e.g. f12) and mute of your machine to save all your secret work getting exposed.
You can hide browsers, folder and any application with either using F12 and if you find that will catch attention use the left mouse + right mouse button together. Download this app for free from here.
Similar Application : Clicky Gone and Mock MS Word