I've been researching ideas on how to implement this for a while now but can't really find what I'm looking for - hopefully someone can offer up some advice or point me in the right direction.
For purposes of visitor tracking, I'm looking to monitor activity on my website via a unique query string, e.g:
mysite.com?custom-string
I want to preserve the query string on all other pages of the site, but only have this available to the person who has accessed it. The idea being, they can navigate to other URLs and the query string will still be appended to the URL on the page load/change.
Is this possible? And what would be the best way to implement this? JS/Cookies? This is relatively new to me.
Thanks in advance for your help.
Mark.