How to lock Folder in Windows

If you want locking up your folder with a password, so the user who
knows the right password can only be able to access the folder, where others don’t (Well this is not quite
secure, but can be useful in learning batch programming, because even a noob can easily identify the
password, or can access the folder without using a password, there are a lot of ways to break it).
The batch file that is given below will create a directory named ‘Locker’, when it gets executed,
then you may place whatever you wish to place inside that directory, once done re-execute the same batch
file, then it will prompt you whether to lock the folder,  like this
press ‘y’ and hit enter, then the directory ‘Locker’ Disappears. In order to make the directory re-appear
again, you have to execute the same batch file once again, then it will prompt you to enter the password to
unlock the folder, you have to enter the password as ‘secret’, since it is already mentioned by default in
the program itself.
Once the password is matched, then the folder becomes visible, so that you can access the folder again.
So, what happens is that, the folder ‘Locker’ is set with the system and hidden attribute, hence it becomes
invisible, when the batch program is executed again, it prompt for password, which is already set as an
environment variable with a value ‘secret’, when the match is found, the attribute is set to normal and the
folder becomes visible and accessible.
Here is the snippet for the folder locke.
Copy , paste this code on notepad and save as with bat extension (like lock.bat). 
 
Script:

@echo off
title Folder Locker
if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST Locker goto MDLOCKER
:CONFIRM
echo Are you sure u want to Lock the folder(Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM115
:LOCK
ren Locker "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
attrib +h +s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
echo Folder locked
goto End
:UNLOCK
echo Enter password to Unlock folder
set/p "pass=>"
admin
if NOT %pass%== secret goto FAIL
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" Locker
echo Folder Unlocked successfully
goto End
:FAIL
echo Invalid password
goto end
:MDLOCKER
md Locker
echo Locker created successfully
goto End

Thanks.