Your digital footprint is basically the permanent trail of data you leave...

https://www.bookmarkingtraffic.win/every-time-you-browse-you-leave-a-trail-of-breadcrumbs-that-companies-use-to

Your digital footprint is basically the permanent trail of data you leave behind every time you use an app or browse the web. It’s like a breadcrumb trail that companies use to track your habits