Picture of Use your old usb flash drive as a computer lock
In this Instructable I will show you how to turn any usb or SD card into a lock for your computer.

Step 1: Download Predator

Picture of Download Predator
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First thing first download Predator here:

limbo11 months ago


Just to give an alternative solution: USB Raptor (which is open source)


spyroot1 year ago

AVG aAntivirus found virus on .exe

yenscasper3 years ago
Open/read/scan/view/extract rar files with the aid of next source RAR Repair Toolbox
xxx 1253 (author)  yenscasper3 years ago
thanks yenscasper for posting an add to RAR Repair Toolbox!
Dude. Print screen, paste into paint, crop and save as jpg, upload. That's what the button is for.
fhszfsfs4 years ago
you should simply use the "lock" button in windows next to the "shut down", "hibernate", "sleep" and "restart" buttons. why so much hassle.
vishalapr4 years ago
I used this to keep my computer protected from my cousin and it worked perfectly!Rated4.5*
Have a look at my latest ibles as well and rate and comment and maybe even vote!
Thanks in advance!
xxx 1253 (author)  vishalapr4 years ago
I'm glade this program helped keep nosy people and anoying family from messing with your computer. On my laptop I use my micro sd card in its adaptor because its small and hidden/ easy to remove if needed.
Cool!Have a look at my ibles!
xxx 1253 (author)  vishalapr4 years ago
I will look at all of your ibles I'm glade a pro has interest in my second ible
Its not that I'm a pro but its just that I like these kinda stuff I mean pros are just people who have payed money or won the membership in contests etc and I'm one of the pros who got the pro membership in a contest!
xxx 1253 (author)  vishalapr4 years ago
Well no matter I like that my peers are interested in what I do in my spare time.
aaahotdog4 years ago
It is a nice find, but it is not really computer security. It is basically just a way to lock your desktop which can be done by setting a password on a screensaver app. It is only going to keep people out of your pc if you are within sight of your pc.
SWV17874 years ago
is there a way to circumvent the protection if you lose the usb?
xxx 1253 (author)  SWV17874 years ago
yes set the program to not start at startup, then if you lose your key just open program and creat a new key( just to make sure delete the old key incase someone stole it). In the payed version you can un-cheek the task manager box then if you lose the key you can press control alt delete to open task manager and close the service