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

https://www.social-bookmarkings.win/every-time-you-browse-you-leave-behind-a-trail-of-data-like-a-digital-shadow

Every time you visit a website or use an app, you leave behind a trail of data that companies use to track your habits. This is your digital footprint. It’s how advertisers follow you around the internet