KeyLemon Desktop Application




More Smiles, Fewer Passwords

Personal, secure access to your computer.


KeyLemon’s Desktop App provides a convenient, hands-free way to secure your computer. Our free app for Windows and OSX allows you to unlock your PC or Mac via your webcam, in less time than you can type your password. Isn't it time your computer recognized you the way your friends do?


Free Download »



Speaker Recognition for Windows

KeyLemon v3 for Windows is here !



KeyLemon has integrated speaker recognition into the Windows application. You can choose to unlock your PC with face and / or speaker recognition. Upgrade to v3 Gold for Windows and enjoy the ease of use of having two recognition methods!


Upgrade »

Experience the magic of face recognition



1.

Download and install our free version.
KeyLemon Download

2.

Create your unique face model.

You are ready to try the KeyLemon Desktop Application!

KeyLemon Pricing

3.

Get a licence to use face and speaker* recognition and additional features:

Create multiple models to capture variation in lighting, with/without glasses, etc.

Automatically lock your session when you step away. Take pictures of hijackers who attempt to access your computer without permission, and more.

And new with the version 3 for Windows enjoy the ease of use of our speaker recognition method.

* available for Windows only



New: Speaker Recognition for Windows

Features


KeyLemon Login

Login with recognition

Learn more...

KeyLemon Hijackers Tracking

Take a picture of the culprit.

Learn more...

KeyLemon Permanent Protection

Auto Lock when you leave

Learn more...

KeyLemon Security

Ease of access, antispoofing

Learn more...

KeyLemon Multimodel

Models by lighting conditions

Learn more...

KeyLemon LemonDay

Track your face evolution

Learn more...



Pick the right level of protection


BASIC Free
 
  • Windows login

    Login with face recognition
    (Windows only)

    KeyLemon Windows Login
  • LemonDay plugin

    Track your face evolution

    LemonDay
BRONZE CHF 19.95  *
 *one time payment
  • Windows login

    Login with face recognition
    (Windows only)

    KeyLemon Windows Login
  • LemonDay plugin

    Track your face evolution

    LemonDay
  • Permanent Protection

    Auto Lock when you leave

    Permanent Protection
  • Logonscreen Themes

    Customize your logon screen

    Logonscreen Themes
BEST OFFER! GOLD CHF 39.95  *
 *one time payment
  • Windows login

    Login with face recognition
    (Windows only)

    KeyLemon Windows Login
  • LemonDay plugin

    Track your face evolution

    LemonDay
  • Permanent Protection

    Auto Lock when you leave

    Permanent Protection
  • Logonscreen Themes

    Customize your logon screen

    Logonscreen Themes
  • New for Windows!
    Choose your technology!

    Face and/or speaker recognition

    Anti-spoofing Check
  • Hijackers Tracking

    Take a picture of the culprit

    Hijackers Tracking
  • Security Levels

    Choose the ease of access

    Security Levels
  • Multimodels

    Face models for different lighting conditions

    Multimodels
  • Anti-spoofing Check

    Check for liveliness

    Anti-spoofing Check

* After purchasing a license key to our software, you will require an Internet connection and simply activate the license in the free release!


If you currently have a license for KeyLemon Desktop Application v2.x, you will need to upgrade your key to activate version v3.x.

Please visit this page for upgrading your license key.


Download Free Releases

Windows

Mac

OS Compatibility OS Compatibility
  • Windows 8 and 8.1
  • Windows 7
  • Windows Vista
  • Mac OS X 10.10 (YOSEMITE)
  • Mac OS X 10.9.x (MAVERICKS)
  • Mac OS X 10.8.x (MOUNTAIN LION)
  • Mac OS X 10.7.x (LION)
  • Mac OS X 10.6.x (SNOW LEOPARD)
Latest KeyLemon Version Latest KeyLemon Version
3.1.1 2.7.4
KeyLemon Languages KeyLemon Languages
 English
 Brazilian Portuguese
 German
 Spanish
 French
 Italian
 English
 Brazilian Portuguese
 German
 Spanish
 French
 Italian
File size File size
88 Mb 35 Mb
Hardware requirements Hardware requirements
  • Intel Processor (core 2 duo (64-bit capable))
  • 1 GB RAM
  • 200 MB hard drive space
  • Integrated webcam (laptop) or USB webcam
  • USB microphone or integrated microphone (laptop) in order to use speaker recognition
  • Intel Processor (core 2 duo (64-bit capable))
  • 1 GB RAM
  • 50 MB hard drive space
  • Integrated iSight camera
Download Free KeyLemon 3.1.1
for Windows/Vista/7/8 »
Download Free KeyLemon 2.7.4
for Mac OS X(10.6/10.7/10.8/10.9/10.10) »
Purchase additional features Purchase additional features

Releases Notes

Windows


    Fixed bugs
    • Fix problem with some webcams not being recognized by KeyLemon
    • Fix warning when launching Control Center in quick adapt mode from menu of LemonLock
    • Fix message "Password has changed" when domain controller not available
    • Fix link in Windows logonscreen to relaunch KeyLemon logonscreen interface
    • Improve support for high-dpi display
    • Improved global stability

    New features
    • Add speaker recognition as new authentication method
    • New design for KeyLemon Control Center and KeyLemon logon screen theme
    • Support for high-dpi display
    • Add challenge/response eye blink option
    Fixed bugs
    • Fix display of KeyLemon Control Center for high-dpi display
    • Fix LemonLock tacking picture of hijackers when no face detected
    • Improved global stability

    New features
    • Compatibility with Windows 8.1 (windows blue)
    Fixed bugs
    • Fix “do not lock if fullscreen application” failed for some full screen applications (like youtube)
    • Do not require eye blink with LemonLock
    • Improved global stability
    Additional notes:
    • Windows XP no longer supported (please download version 2.6.5 for XP)

    New features
    • Compatibility with Windows 8
    • Removal of LemonFox plugin (serious technical issues with new Firefox versions)
    Fixed bugs
    • Improved global stability

    New features
    • Better management of webcam with dock situations
    • LemonFox plugin compatible with Firefox 13
    Fixed bugs
    • Improved global stability

    New features
    • Improved face model creation wizard
    • LemonFox plugin compatible with Firefox 12
    Fixed bugs
    • Fix activation problem for special hardware configuration
    • Fix problem with LemonDay if Control Center opened while locked
    • Improved global stability

    New features
    • Improved anti-spoofing detector
    • Image conversion and LemonDay optimisation at login
    • LemonFox plugin compatible with Firefox 11
    Fixed bugs
    • Fix deactivate button stays disable
    • Fix bug on XP KeyLemon login screen did not display for some configurations
    • Fix login on Twitter for LemonFox
    • Improved global stability

    New features
    • Possibility to add delay before starting authentication (LemonDay optimization)
    • Possibility to deactivate the software to transfer the license on a new machine
    • LemonFox plugin compatible with Firefox 10
    • Improved application loading time
    Fixed bugs
    • Fix export of LemonDay movie on 32-bit platform (x86)
    • Improved global stability

    Fixed bugs
    • unability to set the security level
    • profile could be deleted when capturing hijacker
    • unable to update Windows password stored in KeyLemon after Windows password change

    New features
    • New plugin LemonDay in Basic Package
    • Basic Package is now free
    • LemonFox plugin compatible with Firefox 8,9
    • Improved capture and face recognition speed
    Fixed bugs
    • Bug at login when starting webcam if unlock disabled
    • Improved global stability
    • Improved application loading time

    New features
    • LemonFox plugin compatible with Firefox 7
    • New model adaptation method, multimodel
    • Improved anti-spoofing algorithm, eye-blinking
    • Face thumbnail choice
    Fixed bugs
    • LemonFox settings not saved
    • Windows desktop detected as fullscreen application
    • Position of the windows with multiple monitors
    • Hijacker notification

    New features
    • LemonFox plugin compatible with Firefox 6
    • Low video resolution option (for computers with lower power)
    • Reduced Control Center size to fit on smaller screens (Netbooks)
    Fixed bugs
    • Activation through a proxy
    • Theme did not install
    • Windows desktop detected as fullscreen application

    New features
    • LemonFox plugin compatible with Firefox 5
    • Trial limitation in days instead of number of logins
    • Hijacker notification after capture
    • Biometry improvement : recognition possible at a farther distance from the webcam
    Fixed bugs
    • Fullscreen application detection
    • Updater timeout causing incomplete download of update
    • Unability to quit the Control Center if it asks for a new password

    New features
    • LemonFox plugin compatible with Firefox 4 (LemonFox)
    • LemonFox plugin compatible with Windows 64-bit (LemonFox)
    Fixed bugs
    • Settings files sometimes corrupted after a successful login
    • Incorrect Qt Dlls loaded if another version of Qt is present on the system

    Fixed bugs
    • LemonFox no more launched on Facebook (LemonFox plugin (only for x86))
    • Fullscreen applications detection correction (LemonLock plugin)
    • Fix inactivity detection with applications launched with administrative rights
    • Server communication improved

    New features
    • Security levels : customize the recognition algorithm discrimination level
    • Better graphical integration with windows login interface
    • “Don't lock if fullscreen application” feature avoids the automatic lock of your computer while you are watching a movie, doing a presentation,…
    • Availability to buy 3 different software versions : Basic, Bronze, Gold
    • “LemonScreen” is now called “LemonLock” for better feature communication
    • “LemonLogin” integrates the login screen and the lock screen
    Fixed bugs
    • Login on windows domains when a local user has the same name as a network user
    • Webcam not responding or logon screen freezing when computer is resuming from a sleep state
    • Global stability improvment

    New features
    • New themes version (compatible with KeyLemon's World Cup Game )
    Fixed bugs
    • Updater does not launch automatically for some users (updater for future updates (from 2.3.1 to 2.x) should start automatically)
    • Global stability improvment

    New features
    • Themes for LemonLogin and LemonScreen (visit http://www.keylemon.com/themes for more information)
    Fixed bugs
    • Unicode correction (for names with special characters)
    • Windows accounts usernames not updated when modified
    • Fixed bug with LemonFox on Facebook website
    • Global stability improvment

    New features
    • KeyLemon is now fully UAC compatible (KeyLemon applications are no longer blocked at startup)
    • KeyLemon allows standard users to log in their accounts with face recognition
    Fixed bugs
    • Fixed License tab not accessible in Control Center for too low screen resolutions
    • Fixed settings not refreshed for LemonScreen
    • Language corrections
    • Global stability improvment

    New features
    • New LemonFox plugin: now you can use KeyLemon to access Facebook, LinkedIn and Twitter via face recognition
    • KeyLemon is now available for Windows 7
    • KeyLemon works now on 64-bit architecture
    • Distinct previous installers have been merged in a single one
    Fixed bugs
    • Dual screen monitor bug
    • Global stability improvment
    • Access to webcam corrections

    New features
    • KeyLemon available in : French, Spanish, German, English, Portuguese
    Fixed bugs
    • Ctrl-Alt-Del security failure
    • Microsoft Visual C++ Redistributable SP1 package (Files created in C:\)
    • Improved global stability
    Additional notes:
    • update of Qt libraries (4.5.1)

    First release

Mac



    New features
    • KeyLemon compatible with Mac OS X Yosemite (10.10)

    New features
    • Add possibility of uninstallation when OS X version is not supported
    Fixed bugs
    • Fix font display on Mavericks
    • Prevent installation on Yosemite (not yet supported)

    Fixed bugs
    • Fix uninstallation on Mountain Lion
    • Fix security issue on Logon screen

    Fixed bugs
    • Fix issue with activation after update on KeyLemon server

    New features
    • KeyLemon compatible with Mac OS X Mavericks (10.9)

    New features
    • KeyLemon compatible with Mac OS X Mountain Lion
    • Add italian language
    • Shorter wizard
    Fixed bugs
    • Fix reinitialization of webcam if not accessible (desired vs available webcam)
    • Fix crash when LemonDay when deleting last image

    New features
    • Improved anti-spoofing detector
    • Image conversion and LemonDay optimisation at login
    Fixed bugs
    • Fix deactivate button stays disable
    • Fix bug with hijacker capture which could delete profiles
    • Improved global stability

    New features
    • Possibility to add delay before starting authentication (LemonDay optimization)
    • Possibility to deactivate the software to transfer the license on a new machine
    • License system similar to windows version
    • Improved application loading time
    Fixed bugs
    • Improved global stability

    Fixed bugs
    • unability to set the security level
    • profile could be deleted when capturing hijacker

    New features
    • New plugin LemonDay in Basic Package
    • Basic Package is now free
    • Improved capture and face recognition speed
    Fixed bugs
    • Bug at login when starting webcam if unlock disabled
    • Improved global stability
    • Improved application loading time
    • Fixed webcam release when webcam used with other software

    New features
    • New model adaptation method, multimodel
    • Improved anti-spoofing algorithm, eye-blinking
    • Face thumbnail choice
    Fixed bugs
    • Password not recognized when no theme enabled
    • Position of the windows with multiple monitors
    • Hijacker notification

    New features
    • Compatible with Mac OS X Lion
    Fixed bugs
    • Memory leak when saving hijacker
    • Logonscreen dialog placement with small screen resolution

    New features
    • Security Levels
    • Hijacker notification after capture
    • French, german, spanish and portuguese translations
    • “Don't lock if fullscreen application” feature avoids the automatic lock of your computer while you are watching a movie, doing a presentation,…
    • LemonScreen plugin is now called LemonLock (standardization with Windows version)
    • Possibility to extend trial period after feedback submission
    Fixed bugs
    • KeyLemon logonscreen not closed after Screensaver restart (while locking)

    First release

Frequently asked questions (FAQ)

General


  • You can find details about license, software use, releases notes and more in our wiki.


  • Please take a look at the following illustrated article in our userguide that explains how to check for updates on Windows and on Mac.


  • Please take a look at our illustrated topic in our userguide : How to upgrade my license.


  • KeyLemon should support any USB camera (integrated or external) which is compatible with Windows Media Foundation. We have successfully tested KeyLemon with most of the recent webcams. If you encounter a compatibility problem with a webcam, please report with a detailed description of the webcam.


  • No picture of you is transmitted on internet. Only one face model is made and this is locally stored on your computer, accessible by KeyLemon only. This model is based on the statistics of your facial features and is saved in a binary format which cannot be read by third parties.


Windows specific


  • If you currently have a license for KeyLemon Desktop Application v2.x, you will need to upgrade your key to activate version v3.x.Please visit this page for upgrading your license key..


    Because of an update of the biometric engine between version 2.x and version 3.x, the biometric models are not compatible between the two versions. If you have version 2 installed on your machine, follow the steps below to install and activate KeyLemon v3.

    1. Uninstall version 2.x.
    2. Install version 3.x.
    3. If you have already a license key for v2.x, upgrade your key at the following page.
    4. Activate KeyLemon v3.x using your key.
    5. Create your face and speaker models.


    Please note that we have upgraded customers who purchased a v2.x license less than 30 days before the v3.x release. That is, for all purchases between December the 21st of 2014 and January the 21st of 2015.


  • KeyLemon should support any USB microphone (integrated or external) which is compatible with Windows Media Foundation. If you encounter a compatibility problem with a microphone, please report with a detailed description of the device.


Mac specific


  • Some users reported the KeyLemon logon screen interface does not display after upgrading to 10.9.2. The operating system overwrites the settings for the screensaver configuration during this update. If you face the issue you have two options:

    1. Download this little app. Once downloaded, unzip and run the app. You will need to log out and log in again in order the system reload the settings.
    2. Download full KeyLemon app again from our download page and install it on top of the previous version to restore the configuration.

  • The main reason why KeyLemon cannot take part inside Mac App Store is that KeyLemon installation requires administrator privileges, which is not allowed by Apple. Indeed, because KeyLemon acts very close to the system, administrator rights are required during installation (only during installation) to place files at the right place.

    We would love to host KeyLemon software within the Mac App Store, but KeyLemon does not fullfill the drastic Mac App Store requirements. These requirements can be seen here for those with an appropriate developer account, here for the others.


  • In order to uninstall KeyLemon properly, you have to use the "Uninstall KeyLemon" button from within KeyLemon application. Simply removing the application (/Applications/KeyLemon.app) will not uninstall KeyLemon correctly. This is clearly explains in the Readme step of KeyLemon installation.

    In order to uninstall properly KeyLemon, please follow the following steps:

    • Open KeyLemon application (/Applications/KeyLemon.app). Depending if you are in end of trial or not, KeyLemon should open in the "General" tab or in the "Licenses" tab directly. Both tabs have an "Uninstall KeyLemon" button.
    • Click on the "Uninstall KeyLemon" button. A dialog asks you if you really wants to uninstall KeyLemon. Click on "Yes" (See printscreen "uninstall_2.png"). Then you are asking for an administrator passwords.
    • Finally, KeyLemon tells you that the uninstallation completed correctly and that the Application package (/Applications/KeyLemon.app) will now be removed.

    Yes, but what if I have already removed KeyLemon.app ?

    If you have already removed KeyLemon.app, please install again KeyLemon and follow the steps described above.



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