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A cookie is a small text file which does not allow the User to be identified, nor does it allow information contained in the files of the User’s computer to be read, but which records information relating to the browsing of an electronic device on a site during the period of validity or recording of the cookie. The data obtained in this way is intended, for instance, to facilitate subsequent navigation on the site, offer personalized services, improve the performance of site content, and enable various traffic measurements.

When visiting the Site, different types of cookies are placed on the User’s computer:


  • Preference cookies, analysis and audience measurement cookies

Consent to the use of all these cookies is collected either globally or by purpose when the User first connects to the site. The User may withdraw his or her consent at any time by clicking on the “Cookie management” button bellow, it being specified that withdrawal of consent has no retroactive effect on the processing already carried out.


The User may also delete cookies or block all cookie creation by modifying browser settings as follows:

  • On Internet Explorer :
  • On Firefox :
  • On Google Chrome :
  • On Opéra :
  • On Safari :

If you block all cookies, your use of the site may be affected.


  • Analysis and audience measurement cookies

The purpose of these cookies is to establish, anonymously, statistics on the number of visits and use of the various contents of the site (number of visits, number of pages viewed, most visited pages, functionalities used, frequency of return).

This information is used to improve site performance and provide a better user experience.

These analytical cookies are implemented by PIANO.

_pcid Visitor ID 13 months by default
_pctx Piano Storage 13 months by default
_pprv Consent mode persistence 13 months by default
pa_user User information stored 13 months by default


  • Consent management cookies

These analytical cookies are implemented by DIDOMI.

didomi_token Storage of consent information 13 months by default
euconsent-v2 TCF IAB consent chain storage 13 months by default