Hi @1982luca ,
If analytics already implemented , You can have Analytics ID to identify the user , if Adobe Experience cloud services is deployed you can MID or ECID to track user.
To understand more about the identification of users in adobe analytics refer to https://docs.adobe.com/content/help/en/analytics/components/metrics/unique-visitors.html
Hope this helps
Basically I have to find which keywords a particular user usually search. Currently, I have an evar that stores the keyword search and I am able to find a list of keywords. By analyzing the result I have this keyword ":", Any suggestion to remove this?
In order to improve it, what If I implement a querystring to catch pages, keywords ? Thanks