How to Lock Your PC using USB Pen Drive?

How to Lock PC using USB Drive?Do you know what else can you do with your USB flash drive, besides using it to store data and for keeping all your portable applications in it? I believe not many people know that you can actually turn your USB drive into a key to lock your computer.

Some time ago, I have wrote a similar topic on locking your PC. I mentioned that you can use your bluetooth mobile phone to automatic lock your PC and you need to install a special application, called Blue Lock on your computer.

Besides using bluetooth, you can use your USB flash drive to lock your PC, to prevent other people from accessing your files when you are away for a while.  In order to do so, here are two free applications that you can use to turn your USB pen drive into a PC locker.

1.USB PC Lock Pro

USB PC Lock Pro turns any USB flash drive into a key that prevents unauthorized people from using your computer. USB PC Lock will automatically lock your computer and perform other actions when you step away from it.

Key Features:

  • Lock worksation when you step away.
  • Lock MSN Messenger.
  • Stop streaming media traffic.
  • Mute audio.
  • Start/Stop event logger.
  • Start/Stop batch.

On the main window of USB PC Lock Pro, you can choose plugin that you want to enable. Right click on the plugin name and click on the “Enabled” option to enable the plugin.

USB PC Lock Pro

Download USB PC Lock Pro (Link no longer working = program no longer exist?)

2. Predator

Predator is a lightweight Windows application that locks your PC when you are away, even if your Windows session is still opened. It uses a regular USB flash drive as an access control device. It’s easier and faster than closing your Windows session, since you do not have to retype your password when you return.

On the first launch, you will be greeted by a dialog box which ask you to enter a password and to prepare a USB flash drive. Insert your USB flash drive and click OK to continue.

Predator Lock PC with USB Flash Drive

On the preferences window, enter new password (at least 6 characters) in the New Password field. You will need this password to unlock your session in case you lose your USB key.

Predator Lock PC with USB Flash Drive

Now, check that the drive letter displayed under “USB key drive” actually matches your flash drive or choose the correct letter from the dropdown list. Then, click the “Create key” button. Finally, click the “OK” button to apply the settings.

To lock your PC, remove your USB drive (that contains the USB key). Once it is removed, the keyboard and mouse are disabled and the screen darkens after a few moments. To unlock your PC, plug in the USB drive. The desktop will be unlocked in less than a second.

Note:  Don’t worry, files on your USB drive will not be deleted nor modified by Predator.

Download Predator (The program is no longer a freeware, it offers 10 days trial if you want to give it a try)

Steve Yu is a technology blogger with ten years blogging experience under his belt. He is the founder of or just MTQ.
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  • hi,

    you can use the USB Drive Monitor to lock your PC using your USB as an access key, you can also record logs of files contained on unauthorized USB Drives inserted to your pc up to 3 folder levels deep…….and much more

    try it its free, type “USB Drive Monitor Download” in google.
    .-= Check out AMAQ´s latest blog post ..USB Drive Monitor Latest Version =-.

  • Natalia

    Yeah, I agree that USB stick may be used in many different ways but it’s really great to have a USB as an access key to your machine. I have found Rohos Logon Key and it helps me enormously in my everyday life. When I come to work I do not type in the password to log into my PC… I just plug the USB in and here you go… start working. When I step away to have a cup of tea I just plug the stick off and my PC is locked. Great – Rohos Logon not just locks my machine but it also adds an extra layer of security to my work PC. Thanks to Rohos! Two thumbs up!!! Try it –

  • Actually There’s a lot more to the USB Drive Monitor:

    USB Drive Monitor Features:

    Log Information about USB Mass Storage Devices inserted to your PC.
    Drive Index
    Logging Time
    Drive Letter
    Drive Label (Name)
    Drive Size (GB)
    Drive Unique Hardware Key
    File Contents up to 3 Folder Levels Deep
    Use your Personal USB Drive as an access key to your PC using the “Access Key Mode”.
    Alert for a Foreign USB Drive inserted to your PC using a custom text message or pick an alert sound file.
    Delete Files of a Foreign USB Drive inserted to your PC Up to 3 Folder Levels Deep.
    Manually or Automatically Enable or Disable ( USB Mass Storage Devices )
    Manually or Automatically Enable or Disable ( Task Manager )

    USB Drive Monitor Quick Modes Selection: USB Drive Monitor Has 4 Pre-Configured Modes for ease of use while keeping the customization of options possible for the user.

    Silent Logger Mode
    Alert and Secure Mode
    Attack and Secure Mode
    Access Key Mode

    Silent Logger Mode: This mode allows you to secretly log information about the USB Mass Storage Devices inserted to your PC. You can chose this mode and then click on “hide” button to hide the program from users. A log of all Foreign USB Mass Storage Devices will be updated every 5 seconds to save the following information: Time, USB hardware Unique ID, USB Size, USB Name, USB Letter, Root directory and up to 3 folder levels file contents. This log information applies to all modes.

    Alert and Secure Mode: When a Foreign USB Drive is inserted, this mode will generate sound alerts, text messages and will not stop until you insert your Personal USB Drive or your password into your PC.

    Attack and Secure Mode: This mode will delete files on the inserted USB Mass Storage Device, Disable Task Manger, Disable Mass Storage Devices, Activates a screensaver with a password protection, generates a sound alert, and only your Personal USB Drive or your Password will unlock your PC.

    Access Key Mode: This Mode allows you to use your Personal USB Drive as an access key to your PC. When removed it secures your PC by activating a screensaver and disabling task manager. to unlock your PC insert your Personal USB Drive to your PC.

  • I think I used to lock the PC with my Transcend 4 gb pen drive’s in-built software. Can’t remember the process now.