Here is a tiny, portable program that allows you to instantly hide all or certain programs on your screen with a shortcut key. So that others near by you don’t see what you’re doing.
The program WinRap has a lock feature to forbid others from accessing this utility temporarily. The hidden application can also be restored exactly to the same state before it was hidden.
Besides that, it can clean your desktop by hiding unneeded windows applications while leaving them running.
Download WinRap (For Windows 7, Vista and XP)