How to easily lock any file on ur pc or Android without any software

Easily lock any file on your computer or android without any software ,and no need to memorize any long programming code ,to lock any file on your pc just

Rename it yes you heard right

You just need to delete the extention of your file

Example you want to lock a file named

Just rename it to


Remove .jpeg

Now refresh ,your file is successfully locked ,

You can use this trick with.any type of file be it .PDF,.mp4 etc

For Android

You can use this trick on your android ,use astrofile manger
To rename your file and while renaming delete the extension and change the name

To unlock it back

Just rename the file and add the extention back

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