Your digital footprint is basically the trail of breadcrumbs you leave behind...

https://www.bookmark-suggest.win/your-digital-footprint-is-essentially-a-trail-of-breadcrumbs-you-leave-behind

Your digital footprint is basically the trail of breadcrumbs you leave behind whenever you browse, shop, or use apps. Advertisers use these pieces of your history to build a profile and target you across the web