https://www.inist.fr/politique-de-confidentialite/
When you browse the Internet:
-whatever the site (Google, Google Scholar, publisher sites, Wikipedia...)
-whatever the query (article title, authors, DOI...)
-The Click & Read extension scans the web page you are visiting looking only for DOI, PMID, PII (Elsevier identifier)
-then searches for the document that matches the identifier found in the following collections: Unpaywall, Istex, Panist and BibCnrs
-and adds the C&R button if the resource is available

You just have to click on the button to access the document.

The Click & Read extension does not record any personal information. The information collected when using Click & Read are: the source consulted (Unpaywall, Istex, Panist or BibCnrs), the URL and DOI of the document consulted, the code of the institution and the BibCnrs domain indicated by the user, the windows.navigator.user-agent as well as the timestamp This information is only used to measure usage in order to know how the service is used.

Translated with www.DeepL.com/Translator (free version)