perfect lock

Lock pdf with open password encryption restrict print edit copy fill sign

Lock your USB port with simple click.

Lock and unlock your computer with password and limited time.

Lock all of your files, folders and drives.

Lock the Bad Guys out of your USB ports with MyUSBOnly

Lock any file, including PDF, EXE, images, audio and movies.

lock your files at windows kernel level (very secure and super fast).

Lock your files and folders to protect them from unauthorized access.

Lock computer after N days to force payment for leased or rented computers

Lock, hide, and password-protect all types of files and folders.