New - New Folder - Rename
Keep Pressing Alt Button and type this on Num Pad [ Not the ones above qwerty ] - 0160
This will create a Folder with Blank Name
Also , Right Click - Change Icon - Select The Icon which is just a Blank
Now you have a Invisible FOlder.
Refining it more, it doesn't actually creates a folder without any name(As termed as Blank Name), it puts space which is actually an eligible character.
That 0160 is the code for space(Sorry, I forgot is it Unicode or ASCII or what), so you can do the same by pressing space too
And one more addition, just customize it's icon by right clicking on the folder, and choose some blank icon, which will make it completely unvisible.
And now the trick to get it : Don't use Auto Arrange, otherwise it'll get detected, just place it manually somewhere in the parent folder or desktop(wherever the folder resides), so that only you'll know where actually the folder is.
How can it be Exposed : Techies can easily expose these type of folder by just running a search
Others can explore if they are lucky enough to click any blank space on the desktop mistakenly that's where the folder resides(Tough though
)
Got the Logic : Unicode Character 'NO-BREAK SPACE' (U+00A0)