Every time you visit a website or use an app, you leave behind a trail of data...

https://www.morning-times.com/article_d7d0946a-6b1c-4ec9-8dd2-46f5ecbcd932.html

Every time you visit a website or use an app, you leave behind a trail of data that companies use to build a profile on you. It’s basically a digital breadcrumb trail of your habits