How to lock your folder without any software?

To create a folder lock yourself, follow these steps:

1. Open notepad.
2. Copy and paste the code highlighted below:
3. Save it as locker.bat
4. Open locker.bat. you'll see a folder namely "tellhowto"
5. Put all your things to be hidden in it.
6. Again go to locker.bat and lock the folder.
7. Voila you've done. Now you are free from anybody's interference from your data.

cls
@ECHO OFF
title Folder tellhowto
if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST tellhowto goto MDLOCKER
:CONFIRM
echo Are you sure u want to lock the folder(Y/N). Y : Yes, N : No
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 CONFIRM
:LOCK
ren tellhowto "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=>"
if NOT %pass%==password goto FAIL
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" tellhowto
echo Folder unlocked successfully
goto End
:FAIL
echo Invalid password 
goto UNLOCK2
:FAIL2
echo Invalid password
goto end
:MDLOCKER
md tellhowto
echo Folder created successfully
goto End
:UNLOCK2
echo Last chance to enter correct password to unlock folder
set /p "pass=>"
if not %pass%==mylocker goto FAIL2
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" tellhowto
echo Folder unlocked successfully
:End

REMEMBER : The by default password is mylocker . If you want to change the password simply search out for mylocker and replace it with your own.