that foot print you leave behind you every time you use internet and step in or on something .
every time you connect , you log in , you enter a website , you scroll , you click, you type , you share something ... you leave a trace on the internet and of course it's sent to huge data center that collects such informations.
what they collect ? ..... everything 🙄
then they are filtred , organized then sold to different clients ( governments , big marketing companies , research centers and institutions ... ) and used basically against you ( another topic linked to #conspiracy ) ...
same thing with smartphones , and worst, they can access your camera and mic any time they want to .
privacy ?? that's just a word , can have it in bathroom and without phone .
security ?? that's another topic .
some security tricks can help to reduce your traces . but not to delete them unless you have your own personal internet protocol and machines ... but once you connect to the public network , booom 💥 you are exposed ... again 😜
but the big security things are linked to cyber security , serious work done by websites and most of the companies to secure themselves from attacks , and they have also footprints 🤷♂️