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Download Editors' Rating:
Average User Rating:
out of 30 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Mar. 23, 2011
  • Price:
    Free to try (30-login trial); $9.95 to buy (Buy it now)
  • File Size:
  • Downloads Last Week:
  • Platform:
  • Product ranking:

Editors' Review


KeyLemon logs you in to your computer by using your face. More than just a glorified Webcam tool, it regularly checks to make sure that it really is you using the computer. The latest version of the app also comes with a neat Firefox plug-in called LemonFox, for added protection when logging into Facebook, Twitter, and LinkedIn.

Once installed, the program's Wizard will walk you through creating a profile of your face, and link it to your computer's log-in. From there, KeyLemon defaults to checking the Webcam every 10 seconds, although you can always bypass it with your text-based log-in. If the face in front of the Webcam isn't yours, KeyLemon locks the computer--but not before taking a photo of the hijacker. KeyLemon will also lock the computer if it detects that nobody in front of the computer. You can change how often it checks the Webcam, create multiple profiles, toggle the log-in feature on and off, set it to run at start-up, and create your own skins. Just like the main program, the LemonFox plug-in opens to a tutorial to get your started and it uses the Webcam to prevent unauthorized access--at least on the computer that has KeyLemon installed. Hopefully, LemonFox will be able to support more Web sites in the future.

KeyLemon was largely, but not completely, problem-free. The most common software issue occurred when waking the computer. It would occasionally not recognize the face in the front of the Webcam. Also, it crashed the computer when jumping from the laptop dock to undocked mode. The biggest problem though was lighting. If the lights on your face are too strong, the program can't discern your features and it won't function. Overall, though, it seems like a solid software tool for adding an extra layer of security to your computer. Just don't expect it to fully replace your text-based or fingerprint log-in.

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Publisher's Description

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User Reviews

Results 1–1 of 1

1 stars

"A photo of yourself is all you need to log in"

April 06, 2011  |  By SeanJuan451

 |  Version: KeyLemon 2.4.1


It's cheap, easy to install and setup


Anyone can access the computer with a photo of the computers owner.
If you use this on a dev system that runs several virtual machines (VM) they will accuse you violating there TOS and deactivate your program.


This program is a big waste of money.
It is easily bypassed by a photo.
They do not even understand their own Terms of Service.
Their technical support is worthless and quick to accuse you of doing things you are not even doing so they can move on two the next victim who buys the program.

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Full Specifications

What's new in version 2.4.1
Version 2.4.1:
  • Full screen applications detection correction (LemonLock plugin)
  • Fix inactivity detection with applications launched with administrative rights
  • Bug corrections (see releases notes in our user guide on KeyLemon website)
Publisher KeyLemon
Publisher web site http://www.keylemon.com
Release Date December 22, 2010
Date Added March 23, 2011
Version 2.4.1
Category Communications
Subcategory Webcam Software
Operating Systems
Operating Systems Windows XP/Vista/7
Additional Requirements None
Download Information
File Size 44.14MB
File Name kl-2.7.1-windows-setup.exe
Total Downloads 369,479
Downloads Last Week 178
License Model Free to try
Limitations 30-login trial
Price $9.95

Previous Versions:

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