How to lock and unlock your computer using pendrives

Friends i am back again with a new post on how to lock and unlock your computer using a pen drive. we will use a software named as predator to perform this trick.
suppose nobody can have access to your computer unless and until your pendrive is attached to your computer and if the pendrive is not plugged in.
your computer will be locked and cant be accessed by any person. thus the pendrive acts as a key for your computer.
this can be easily done by software predator.
follow the steps given below in order to perform this trick.

STEPS:

• first of all download predator software application from HERE.
• then after dwonloading install it.
• now plug in your pendrive.
• then open predator application.
• a dialog box will open and will ask for a source and unique password which will be used in case you lost your pendrive.
• then click on next to create the key.
• now after it finishes plugout your pendrive you will se that your computer is locked.
• and when you plugin  your pendrive again your computer is unlocked again.

NOTE: nothing happens to the data in pendrive.