.. _licensing-principles:

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Licensing Info
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.. rubric:: In this chapter:

.. contents::
   :local:


Licensing Principles
==========================

The following criteria apply to FindFace Security licensing: 

#. The number of extracted biometric samples. The biometric samples are extracted from faces detected in the video and from dossier photos, as well as when building so-called :ref:`person <persons>` centroids.

   The licensing scheme is the following:

   * Events: 1 event of video face detection = 1 face in a license.
   * Dossier: 1 photo in a dossier = 1 face in a license.
   * Persons: 1 person = 1 face in a license.  

#. The number of cameras in use.
#. The number of model instances in use in the ``findface-extraction-api`` component.
#. Face features recognition: gender/age/emotions/glasses/beard/face mask. 
#. Face liveness detection.
#. Integration with partners.

You can choose between the online and on-premise (aka offline) licensing: 

* The online licensing is provided by interaction with the NtechLab Global License Manager ``license.ntechlab.com`` and requires a stable internet connection and DNS. Upon being disconnected from the internet, the system will continue working off-grid for 4 hours. It is possible to prolongate this period for up to 2 days (inform your manager if you need it). 
* The on-premise (offline) licensing requires a USB port on the physical server with the ``findface-ntls`` component (license server in the :ref:`FindFace core <architecture>`), that you will use to plug in a provided USB dongle. 

For the system to function, a single instance of ``findface-ntls`` should be enough. If your system requires more license servers, contact your NtechLab manager beforehand to prevent your system from being blocked. 


View and Update License
================================

After you install FindFace Security, upload the license file that you obtained from your manager into the system. To do so, navigate to :menuselection:`Preferences -> License`. 

    |license_en|

     .. |license_en| image:: /_static/license_en.png
        :scale: 45%

     .. |license_ru| image:: /_static/license_ru.png
        :scale: 45%

Use the same tab to consult current licensing information and upgrade your license.
 
.. seealso:: 
   :ref:`ntls`