KeyLemon Blog

We are excited to announce that KeyLemon 2.5 is now available for the world, just one monhts after 2.4.4.

This new release comes with two main new features:

1. Multiple face model management
2. Anti-spoofing check for login

1. Multiple face model management

The profile tab has changed significantly and allows you to add new face models to improve recognition in different lightning environment.

For each face model, you can see under the model name:

• the number of authentications (number of time you have been logged using this face model)
• the mean time of recognition

These statistics will allow you to judge the “quality” of the face model as we will explain below.

When you select a model, the details of the selected model appear on the right side. Note that you still have the possibility to “improve” (previously called “adapt”) an existing face model.

When do you need to improve your model or add a new one?

When you create your face model, it will be optimized for the current conditions (luminosity, position, intensity, isotropy or background).

The face recognition can fail if they are too many differences between the face model and the current conditions. This could happen when the sun’s light is changing or if you’re moving with your laptop.

In this case, you have now two solutions:

1. improve your face model
2. add a new facemodel

1. Model improvement

If the recognition works sporadically or takes a long time (mean authentication time is high), you can improve an existing model to adapt it to the current conditions. The model will be modified to take the 2 situations into account.

The adaptation wizard is similar to the model creation wizard. For more information, please refer to the article on how to create your face model in our userguide.

2. Add a new facemodel

If the new lighting conditions are too different between the first model and when you want to improve it, KeyLemon cannot process an improvement, so a new face model will be created.

You can force a new model creation by clicking “Add a new face model”. A good habit would be to give as new name for this face model the name of the current place (for example “office” or “home”), or current time (for example “office morning” or “office afternoon”).

Note for those updating from a previous version: this new feature will require that you create your profile again.

2. Antispoofing check for login

For those of you who want more security, KeyLemon offers now a new feature to detect is someone is trying to spoof the system (typically, if someone use a picture of you to gain an illegitimate advantage to log into the system).

The antispoofing algorithm works as follow:

The first anti-spoofing detection is performed in parallel with the recognition. Once both of these processes validate, a blue eye icon appears in the top right corner of the video stream. Now blink your eyes once to log into your session.

To activate this feature, check the “anti-spoofing check for login” option in the general tab of KeyLemon Control Center

Other new features

Sometime, you are not very satisfied of the thumbnail picture which is saved for your face model. You would better have another facial expression. For this reason, we added in the last step of the face model creation wizard the possibility to choose between several picture that were used to create your face model.

Here below are reported the new features and bug corrections from our release notes on Windows:

How do I update to the last version ?

Please take a look at our user guide which illustrates how to update your KeyLemon version on Windows.

Related Posts

• KeyLemon 2.5 for Mac
• KeyLemon coming to Windows 8
• KeyLemon 2.4.3 for Windows and Mac
• KeyLemon available on Mac OS X Mountain Lion (10.8)
• Evolution of KeyLemon licensing system